Real Madrid’s Team Formation vs Olympiacos: How Xabi Alonso Can Survive the Defensive Crisis

Real Madrid team formation is under intense scrutiny tonight as Los Blancos travel to face Olympiacos in the Champions League. With a defensive injury crisis and only one natural centre-back available, every positional choice from Xabi Alonso could decide whether Madrid survive a hostile night in Piraeus or leave Greece with more questions than answers.

Dek:

Real Madrid travel to a hostile Georgios Karaiskakis with one fit natural centre-back and huge pressure on Xabi Alonso. The team shape and roles tonight could decide not just the result, but the mood around the entire season.

Key Tactical Takeaways

• Real Madrid are likely to line up in a flexible 4-2-3-1 / 4-3-3 hybrid, with Jude Bellingham high between the lines and Kylian Mbappé as the central reference. AS USA+1
• A defensive injury crisis means Raúl Asencio plus a midfielder (Tchouaméni) are expected at centre-back, with Trent Alexander-Arnold and either Álvaro Carreras or Fran García as attack-minded full-backs. Sports Mole+1
• Olympiacos should mirror a 4-2-3-1 with Ayoub El Kaabi up front and Podence/Martins supporting, setting up a clear battle between Madrid’s high line and the Greek side’s transitions. Sportsgambler+1
• Alonso’s main structural question: use Tchouaméni as centre-back to stabilise the last line, or as holding midfielder to control the rhythm and protect the makeshift defence. Sports Mole+1
• The front four of Vinícius–Bellingham–Brahim/Arda Güler–Mbappé gives Madrid huge firepower, but only if the rest-defence behind them is well organised.

Tactical Essentials for Tonight

Match: Olympiacos vs Real Madrid – UEFA Champions League 2025/26, league phase, Matchday 5 Real Madrid CF | Web Oficial+1
Date & Time: Wednesday 26 November 2025, 21:00 CET (20:00 GMT) – Georgios Karaiskakis Stadium, Piraeus UEFA.com+1
Context: Real Madrid winless in three competitive games; looking for a fourth UCL league-phase victory to stay well-placed in the table. Managing Madrid+1

Real Madrid squad available (official):
Lunin, Fran González, Javi Navarro; Trent Alexander-Arnold, Asencio, Carreras, Fran García, Mendy; Bellingham, Camavinga, Valverde, Tchouaméni, Arda Güler, Ceballos; Vinícius Jr, Endrick, Mbappé, Rodrygo, Gonzalo, Brahim. Real Madrid CF | Web Oficial

Key absentees (Madrid):
Courtois (illness), Carvajal, Militão, Rüdiger, Alaba, Huijsen, Mastantuono – leaving only Asencio as a natural centre-back. beIN SPORTS+2Sports Mole+2

Likely shapes:

• Real Madrid (flexible 4-2-3-1 / 4-3-3)
  • GK: Lunin
  • Defence: Trent – Asencio – Tchouaméni – Carreras/Fran García
  • Midfield: Valverde, Camavinga (or Tchouaméni + Valverde as double pivot)
  • Line of 3: Brahim or Güler – Bellingham – Vinícius Jr
  • 9: Mbappé AS USA+2Sportsgambler+2
• Olympiacos (4-2-3-1)
  • GK: Tzolakis
  • Defence: Rodinei – Retsos – Pirola – Ortega
  • Double pivot: Hezze, Dani García
  • Line of 3: Martins – Chiquinho – Podence
  • 9: El Kaabi Managing Madrid+1

Note: These are probable lineups based on multiple reputable previews and injury reports, not confirmed XIs.

Analysis & Tactics — Deep Dive

Shapes & Roles

On paper, Real Madrid look like a 4-2-3-1. In reality, it’s likely to behave as a 4-3-3 in possession and a more compact 4-4-2 out of possession:

• In possession: one of Valverde/Camavinga joins Bellingham to create a three-man midfield, with the “10” stepping high and wide forwards holding the touchline. AS USA+1
• Out of possession: Bellingham pushes up alongside Mbappé to press the centre-backs, Vinícius drops into the left-midfield line, and the opposite winger tucks in to help the double pivot.

The defensive crisis dictates everything. With Carvajal, Militão, Rüdiger and Alaba all out and Huijsen also missing, Alonso essentially has to:

• trust Asencio as the defensive leader,
• pick between Tchouaméni at centre-back or in midfield, and
• decide how aggressive he can be with Trent and the left-back. Sports Mole+2Mundo Deportivo+2

At full-back, Trent will almost certainly play as an inverted right-back, stepping inside next to the pivot to help progression and diagonal switches. On the opposite side, Carreras or Fran García will provide more traditional width and overlaps, especially when Vinícius comes inside. Managing Madrid+1

Olympiacos’ 4-2-3-1 is more orthodox: two screening midfielders, wingers who can step inside to combine, and a 9 in El Kaabi who attacks the box early. That creates a clear stylistic clash:

• Madrid: big-club, high-line, ball-dominant structure but with a patched back four.
• Olympiacos: compact mid-block, direct in transition, heavy use of crosses and diagonal balls into the channels.

Build-up & Pressing

With Lunin in goal and a makeshift centre-back pairing, Madrid’s build-up is likely to lean heavily on Trent’s passing range and Valverde’s ability to receive on the half-turn. Sports Mole+1

First phase:

• Lunin looks for short options into Trent or Valverde rather than risky vertical passes into Asencio/Tchouaméni under pressure.
• Trent inverts to form a temporary double pivot: one of Valverde/Camavinga drops alongside him, with Tchouaméni either behind as a third centre-back or ahead as a single pivot if he’s in midfield.
• The left-back stays lower early to avoid being countered immediately into the space behind.

Olympiacos know Madrid are fragile at the back. Expect:

• Striker + 10 (El Kaabi + Chiquinho) to press the two centre-backs.
• Wingers (Podence, Martins) curving runs to cut off full-back passes and invite Madrid into the centre – where the double pivot can jump. Sportsgambler+1

If Alonso feels the early press is hurting Madrid, we could see more direct balls towards Mbappé and Vinícius in the channels, bypassing the risky build-up and exploiting Olympiacos’ full-backs when they step out.

Madrid’s pressing:

Out of possession, a 4-4-2 press led by Mbappé and Bellingham is likely:

• They lock onto the centre-backs.
• Wingers jump to full-backs on the trigger pass.
• Valverde tracks Olympiacos’ most creative midfielder, while Camavinga protects the half-spaces.

The risk is obvious: with an improvised back line, holding a very high line in an aggressive press could expose Asencio + Tchouaméni to long balls over the top.

Progression & Creation

Once Madrid beat the first line, they have arguably the best attacking talent in the competition. The question is how Alonso structures them.

Key patterns:

1. Left-side overloads with Vinícius & Bellingham
   • Vinícius starts wide to stretch Rodinei and Retsos.
   • Bellingham drifts left to create a triangle with the left-back.
   • Mbappé then attacks the penalty spot on cut-backs, with Valverde arriving on the edge for second balls. Sportsgambler+1
2. Right-side switches with Trent & Güler/Brahim
   • Trent receives inside, looks diagonal to the far side.
   • If Arda Güler starts, he can operate as an interior playmaker, combining with Trent and Bellingham. If it’s Brahim, expect more dribbles and underlaps. Sportsgambler+1
3. Mbappé’s channel runs
   • Against a relatively slow pairing like Retsos–Pirola, balls in the left-channel for Mbappé could be devastating, especially when Vinícius occupies the full-back and drags the line deeper.

Olympiacos, meanwhile, will look to progress quickly via:

• Hezze/Dani García stepping out to break pressure and hit early diagonals,
• Podence receiving in pockets between Madrid’s midfield and defence, and
• full-backs overlapping when the Greek side sustain attacks.

Transitions & Rest-Defense

This is the real heart of tonight’s formation debate.

If Tchouaméni plays at centre-back, Madrid’s rest-defence (the structure they have behind the ball when attacking) could be:

• Trent tucking in,
• Asencio and Tchouaméni as the central pair,
• the left-back slightly narrower,
• with Valverde as the main controller ahead of them.

That gives Madrid three or even four players behind the ball, but weakens the midfield’s ability to put out fires early.

If Tchouaméni plays in midfield, Madrid gain a top-class ball-winner in the centre, but the last line becomes Asencio + full-back, which is much more vulnerable to:

• direct balls into El Kaabi,
• second-ball chaos around the box, and
• quick wide transitions when Vinícius and Trent are high.

Given the atmosphere at Karaiskakis – one of the most intimidating in Europe – Alonso may lean towards maximum control, even if that means sacrificing some midfield talent by dropping Tchouaméni into defence. Real Madrid CF | Web Oficial

On Madrid’s own counters, the formula is simple: win the ball with Valverde/Camavinga, find Bellingham’s first touch forward, and release one of Vinícius or Mbappé into space. Olympiacos’ full-backs, who like to push, will have to be extremely cautious.

Adjustments & In-Game Tweaks

Depending on game state, expect these options from Alonso:

• If Madrid lead:
  • Introduce Tchouaméni into defence (if he starts in midfield) to create a back three in buildup and a flat four in deep block.
  • Bring on a more conservative winger (Rodrygo working both ways) to protect Trent’s side.
• If chasing a goal:
  • Switch to a clearer 4-2-4, with Rodrygo or Endrick joining Mbappé and Vinícius, Bellingham as an advanced 10, and Valverde + Camavinga as the double pivot. Real Madrid CF | Web Oficial+1
  • Ask Trent and the left-back to occupy the last line almost like wingers, pinning Olympiacos deep and relying on crosses and second balls.
• If under heavy pressure:
  • Drop the block lower, accept less possession, and play pure transition football with Mbappé and Vinícius attacking space from deeper starting spots.

Set-Plays

With so many central defenders injured, set-pieces are a double-edged sword for Madrid:

• Defensively:
  • Asencio and Tchouaméni will be key aerially.
  • Valverde and Mbappé likely mark secondary threats, but the overall height of the team is reduced, giving Olympiacos a real avenue via corners and wide free-kicks.
• Offensively:
  • Bellingham’s movement on second phases remains dangerous.
  • Trent gives Madrid a higher quality of delivery from both sides, opening up rehearsed routines: near-post flicks, back-post isolations for Mbappé, and cut-back corners on the ground.

Given the intensity of the atmosphere, first contact on set-plays could easily swing momentum one way or the other.

Standout Individuals to Watch (Tactically)

• Raúl Asencio – makeshift leader
  Forced into the role of senior centre-back, he’ll be responsible for organising the line and handling El Kaabi’s physical presence.
• Aurelien Tchouaméni – joker card
  Where Alonso uses him – centre-back or pivot – will completely change Madrid’s structure in and out of possession. Sports Mole+1
• Trent Alexander-Arnold – inverted playmaker
  His ability to step inside, spray diagonals and still recover in transition will decide how high Madrid can push.
• Jude Bellingham – between the lines
  Continues to function as the “shadow striker”, arriving late into the box and providing the link between midfield and Mbappé. Goal+1
• Vinícius Jr & Kylian Mbappé – the chaos pair
  If Madrid’s structure behind the ball holds, their combined pace and 1v1 quality can kill the game in a handful of transitions.

What It Means

Tonight is less about beautiful football and more about whether Madrid’s team formation can hide its weaknesses while unleashing its strengths:

• Get the balance wrong – too many forwards, not enough protection – and Olympiacos’ 4-2-3-1 can punish every transition in front of a ferocious crowd.
• Get it right – with a smart use of Tchouaméni, disciplined full-backs and Bellingham connecting midfield to attack – and Madrid’s talent advantage should show over 90 minutes.

For Xabi Alonso, the chosen XI and shape will be read as a statement: conservative and protective, or ambitious and brave despite the injury crisis. In a season-defining away night, his team formation is the first big battle of Athens.

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FAQs

How will Real Madrid probably line up against Olympiacos?

Most reliable previews suggest a flexible 4-2-3-1/4-3-3 with Lunin in goal; Trent, Asencio, Tchouaméni and Carreras/Fran García in defence; Valverde and Camavinga in midfield; Bellingham as a central 10; and a front three built around Vinícius Jr and Mbappé. AS USA+1

Why is Real Madrid’s defence such a concern?

Madrid travel with only one fully fit natural centre-back (Asencio). Militão, Rüdiger, Alaba, Carvajal and Huijsen are all unavailable, forcing Alonso to use a midfielder like Tchouaméni in the back line or trust young/full-back options in central roles. beIN SPORTS+2Sports Mole+2

What formation will Olympiacos use?

Olympiacos are expected to line up in a 4-2-3-1: Tzolakis in goal; Rodinei, Retsos, Pirola, Ortega in defence; Hezze and Dani García as a double pivot; Martins, Chiquinho and Podence behind El Kaabi up front. Managing Madrid+1

Which tactical battle could decide the game?

The key duel is between Madrid’s high, aggressive attacking shape and Olympiacos’ direct transitions into El Kaabi and the wingers. If Madrid’s rest-defence (especially Asencio + Tchouaméni) holds under those counters, their attacking talent should tilt the balance.

Is this a must-win for Real Madrid?

In a league-phase Champions League format, every away win is gold. After a poor domestic run and defeat at Liverpool earlier in the group, a win in Athens would ease pressure on Alonso and put Madrid in a strong position to qualify. UEFA.com+1

References

[1] UEFA – Real Madrid 2025/26 Champions League fixtures & Olympiacos match info. UEFA.com
[2] Real Madrid official site – Olympiacos vs Real Madrid preview and calendar notes. Real Madrid CF | Web Oficial+1
[3] Real Madrid official squad list for Olympiacos. Real Madrid CF | Web Oficial
[4] Sports Mole – Olympiacos vs Real Madrid: team news, injuries, predicted XIs. Sports Mole+1
[5] Diario AS – probable Real Madrid lineup vs Olympiacos. AS USA
[6] Various previews & betting analysis on predicted lineups (Goal, Sportsgambler, Managing Madrid, etc.). Managing Madrid+3Goal+3Managing Madrid+3