Casemiro and his centre-back role continue to receive criticism

Arsenal kept their Premier League title dreams alive by ending an Old Trafford hoodoo to grind out a 1-0 win at Manchester United on Sunday to move back top of the table.
The Red Devils showed more spirit than in a dismal 4-0 defeat to Crystal Palace on Monday, but have now won just one of their last eight Premier League games. United remain eighth in the table, three points adrift of both Newcastle, who they face on Wednesday, and Chelsea.
Erik ten Hag's decision to retain Casemiro as a makeshift centre-back after his woeful showing against Palace will become another stick to beat the beleaguered coach with. The Brazil captain was dropped from their squad for the Copa America in midweek due to his terrible form.
"He’s obviously shown that he’s a midfield player and he’s not a natural centre-back. As we said at half-time, once Manchester United want to play this way, whether you’re a midfield player or a centre-back, you have to be ready to push out with the rest of the team because, if not, you play everyone onside and get punished," England legend Wayne Rooney told 'Sky Sports'.
"It was maybe a bit naive, there’s not really an angle anyway for Onana to get the ball to him. But then he has to push out and it’s lazy. It’s lazy, he’s lazy. The rest of his team-mates have pushed out and they get caught by it," he added.