In his three appearances for Manchester United, Casemiro has struggled.
against Crystal Palace, a red card
Defeated against Liverpool 7-0
against Southampton, a red card.
The Brazilian would appreciate the teammates' patience as he served his second straight red card of the season, which landed him a four-match suspension. But times have changed because the Premier League is a top league with fierce competition, and we now expect the best from the players. He never recorded a straight red for Real Madrid.