Bailly was again impressive for victory over Leicester City.
Mourinho said, “I am always positive. We worked so much and so well that my expectations are always high.
“I always think that the team is going to play very well.
“Some guys adapt quickly. Eric Bailly comes from a different competition, a different dimension of club, an African player and he is not experienced at this level.
“He looks very comfortable at such a big club. Other guys it is different for them."