Casemiro has urged Real Madrid fans to stop booing Gareth Bale, defending the Welshman by referencing his contribution to the club's history.
Bale appeared as a substitute against Getafe on Saturday and was jeered on his way onto the Bernabeu turf. It was his fifth league appearance for Los Blancos this season and his first at the stadium since February 2020.
Bale has often been scapegoated as the cause of Real's problems, especially by the media in Spain. Fans were also upset with the former Tottenham forward when he was declared unfit for the Clasico loss to Barcelona last month, only to play and score twice in Wales' World Cup play-off victory over Austria.
Speaking ahead of Real's second leg with Chelsea in the quarter-finals of the Champions League on Tuesday, Casemiro said: "When you whistle one player, you whistle all of us.
"Football is about opinions, everyone has theirs, but I don't agree when a player on my team is whistled. We're all on the same side, we have to support him."
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Bale greeted the jeers from Real's fans with a smile, helping his side see out a victory that took them another step closer to winning the La Liga title.
After the match, manager Carlo Ancelotti said the supporters' whistles were "understandable" but praised Bale for his professionalism.
He said: "I think that our fans are very important. They were against PSG [In the round of 16] and now we have them, that push, on Tuesday.
"The whistle on Bale is understandable but he is doing well now. He is a serious professional."
Real have a 3-1 lead over Chelsea in the UCL tie, with star striker Karim Benzema expected to lead the line alongside Vinicius Junior. Bale is not likely to feature.