From Toni Kroos's harsh complaints in the locker room to the unexpected defeat against Mallorca, Real Madrid faces an eternal paradox: Are expensive superstars the universal key or precisely the barrier to unity?
In the context where the Champions League is the last hope to salvage a trophy-less season, new coach Alvaro Arbeloa stands before his greatest career challenge: How to "fit" Galactico egos like Kylian Mbappe and Jude Bellingham into a system that has been running smoothly thanks to collective spirit?
The hidden side behind the glory
One day before Real Madrid overcame Manchester City last month to secure their place in the Champions League quarter-finals, the Spanish royal club released a documentary celebrating their journey to the latest European championship.
The internally produced film followed the team through the dramatic and eventful 2023-24 campaign, including the penalty shootout victory over City in the quarter-finals and the classic comeback against Bayern Munich in the semi-finals.
However, one of the most revealing moments in the film came from inside the locker room during halftime of the 2-0 win over Borussia Dortmund in the Champions League final at Wembley.

Mbappe had his first start since February 21
This scene captured former Madrid midfielder Toni Kroos complaining that Vinicius Junior and Jude Bellingham were not actively supporting defense, causing major problems for teammates.
"This cannot happen," Kroos said angrily to Madrid's assistant coach at that time, Davide Ancelotti. "One of them must drop back, Jude or Vini, because we are facing a two-on-three situation over there. Their right-back is always left unmarked when receiving the ball."
The rise of collective spirit
The clip highlighted a factor often overlooked behind Madrid's Champions League successes over the past decade. Moments of individual brilliance from attacking "Galactico" superstars are crucial, but no team can win in modern football without a solid tactical foundation and without superstars willing to sacrifice for collective ethics.
Real Madrid head coach Alvaro Arbeloa achieved that in Champions League victories over Benfica and Manchester City in February and March, as well as in the 3-2 win over Atletico Madrid in La Liga just before the recent international break.
However, the disappointing 1-2 defeat at Mallorca dampened some of the positivity around the Bernabeu. One of the biggest questions for tonight's Champions League quarter-final first leg against Bayern is how to reintegrate recently recovered stars Kylian Mbappe and Bellingham without losing the collective spirit and team structure built over the past month.
When simplicity reigns
Arbeloa became Madrid's coach on January 12, after club president Florentino Perez decided that the detailed tactical instructions and cold approach of Xabi Alonso were ineffective in a locker room full of attacking stars.
Promoted from managing Madrid's reserve team in the third division, Arbeloa did not introduce new or complex ideas. Instead, he focused on quickly improving the atmosphere in training and allowing players more freedom to make their own decisions during matches.
It was impressive to see Vinicius Jr and Federico Valverde, who struggled under Alonso, deliver game-changing performances under Arbeloa. Vinicius Jr scored spectacular solo goals in both Champions League play-off legs against Benfica, and Valverde scored a stunning hat-trick to give Madrid the advantage in the first leg of the round of 16 against Manchester City.
Other members of the squad, including attacker Brahim Diaz and defender Dean Huijsen, also looked much more comfortable recently with a simpler playing system.
During the injury crisis, when Bellingham and Mbappe were among eight first-team players unavailable, Arbeloa also promoted Thiago Pitarch from the youth team. Arbeloa said the energy, dynamism, and ambition of this 18-year-old midfielder were exactly what he wanted from all his players.
"If there's one thing we need to take from recent matches, it's this path, regardless of who is on the pitch," Arbeloa said in a press conference after the victory over City in the second leg. "I'm not just talking about the Champions League but also La Liga."
"We have experienced the feeling that when we are not at 100% collective strength, as a unified unit, anyone can beat us. We are aware that we are Real Madrid, but nowadays you have to fight and sacrifice to beat any opponent."

Alvaro Arbeloa replaced Xabi Alonso mid-season this year
Victories over Jose Mourinho's Benfica, Pep Guardiola's Manchester City, and Diego Simeone's Atletico Madrid between February and March are seen as evidence that Perez's gamble on rookie coach Arbeloa is succeeding.
However, practical circumstances show that Arbeloa has yet to face the greatest challenge in Madrid's coaching history: unifying all the expensive stars into one cohesive unit.
Zinedine Zidane and Carlo Ancelotti managed that, and both led the team to multiple Champions League titles. Rafa Benitez and Julen Lopetegui struggled and lasted only half a season.
Former Madrid player Xabi Alonso was acutely aware of the importance of solving this issue when he was appointed last June. His struggle to handle it was the main reason he lasted only 7 months. Star players expressed dissatisfaction when they were not used in their preferred positions or asked to perform on-field tasks they disagreed with.
Warning bells and high-stakes test
The return of Mbappe and Bellingham now presents Arbeloa with massive personnel selection decisions. Madrid's "Galactico" logic suggests that Brahim and Pitarch will be dropped for tonight's match against Bayern, with Mbappe and Bellingham highly likely to start in the most important match of the season so far.
Many around the club are waiting to see how Arbeloa handles this situation. In a press conference before the international break, the former Liverpool defender was asked whether his team could continue playing with the same spirit and cohesion when the biggest stars return.
"Playing with Brahim or Kylian, or with Jude or Thiago, is not the same," he replied. "They have different characteristics, and we must exploit their best abilities when they are on the pitch."
"Defensively, everyone must fulfill their duties, as they always have. Bellingham and Mbappe have many years of playing at the top level, and they know very well what it means to work for the team and put their talent at the service of their teammates."
In the match against Mallorca, Mbappe recovered from a knee injury to make his first start for Madrid since February 21, while Bellingham continued his return from a hamstring injury by playing 30 minutes from the bench in the second half.
The team looked lacking in ideas and decisiveness as they deservedly lost 1-2. The intensity and collective spirit that had driven the recent upturn also disappeared. "Without 200% effort from everyone, we will never win," Arbeloa stated in the post-match press conference.
This result allowed Barcelona to extend the gap to 7 points in the La Liga standings with only 8 rounds remaining, including the El Clasico on May 10. The clash with Bayern Munich therefore becomes even more crucial for Madrid, as the Champions League is essentially their only chance for a title this season.
It is inconceivable that Mbappe, the top scorer in the Champions League with 13 goals in 9 matches, would not start alongside Vinicius Jr in attack. What happens with Bellingham will be very interesting. Over nearly three seasons at Madrid, the English player has delivered great individual moments, but he has yet to establish a long-term tactical role in the lineup.
"With Jude on the pitch, we are a better team," Arbeloa said in the pre-match press conference. "You will see that tomorrow. Kylian has different characteristics, so we must play differently. But I am very happy to have this 'problem,' and it's fantastic that both are back."
Making all the Galacticos embrace the collective spirit that drove the team's rise in February and March seems to be the key factor determining whether Madrid can overcome Bayern over two legs.