The result sees United drop to third place on the table.
Mourinho said: "I am happy with the players' attitudes and desires. I have no complaint about my players.
"I think the performance was a big-hearted performance with the players giving everything due to their limits. The majority of them, with the accumulation of matches, their performance was with very good quality on creation, where we have missed chances and half-chances with crosses and balls in the face of the goal. They are half-chances if you arrive on time."