"I have 24 players," said the Portuguese in a press conference ahead of today's game.
"I cannot have 25 or 30. We have the right number of players. Is every player the same? No, let's be realistic. The squad is good, but not every player is the same.
"One thing is to play Antonio Valencia at right-back, another thing is to play another one. One thing is to play Paul Pogba and another thing is Paul Pogba not being available to play. It depends on the situation."
Jose Mourinho does not want to sign another defender, as Phil Jones, Chris Smalling and Marcos Rojo are able to replace Bailly.