Casemiro recieved a red card during United’s defeat against Galatasaray in the Champions League.
Manchester United faced Galatasaray in the Champions League clash on Tuesday and suffered a 3-2 defeat.
The Red Devils are currently at the bottom of their UCL group in need of a point.
During their defeat, Casemiro received a second yellow card for his poor tackle on Dries Mertens inside the box which brought a penalty, however, Mauro Icardi missed it.
The Brazilian will now be forced to serve a one-game European ban and he will miss the game against Copenhagen at Old Trafford on October 24.