It is possible that Casemiro will make his first Manchester United start when they play Real Sociedad.
Since joining from Real Madrid, Casemiro has made three substitute appearances.
The United boss is going to make changes for the Crystal Palace game.
The captain may play against the Spaniards.
He was asked if he tried to keep his players happy.
"Maybe I can't keep them all happy every game, but everyone gets their game-time if they perform well," said the Dutch.
We have a lot of games to cover. The World Cup and all of the cups in England are in front of us.
We are getting into the Europa League and the premier league at the same time.
Real Sociedad was knocked out of the Europa League by United at the round of 32 stage in 2020.
They are ninth in the table after winning two of their first four games in the league.