Tensions behind the scenes at Real Madrid have escalated with two high-profile training-ground incidents affecting preparations for Sunday's decisive El Clasico. Antonio Rudiger was involved in a heated argument with a first-team player at Valdebebas in April, later apologizing and inviting teammates and their families to lunch. Kylian Mbappe then had a flare-up with a coaching staff member before the Real Betis game on April 24, speaking angrily and in insulting terms after being called offside during a training exercise.

The flashpoints come after Real Madrid's Champions League elimination by Bayern Munich last month, compounding a deteriorating atmosphere around the first team. Mbappe, the club's top scorer with 41 goals from 41 games this season, is also recovering from a hamstring injury sustained at Betis and faced criticism for a trip to Italy with his partner during his recovery period. Manager Alvaro Arbeloa admitted he was unsure whether the French striker would be fit to face Barcelona.

The mood around the squad is described as worrying, with little sign of togetherness ahead of the match where Hansi Flick's Barcelona side only need a draw to be crowned champions. Several players face uncertain futures and there is widespread expectation Arbeloa will not be in charge next season.