The Portuguese boss took over in May and players have been vocal of their appreciation of his tactics and laid-back play-style.
Speaking about Mourinho, Herrera claims players feel the confidence of their new manager.
“We are enjoying every training session and every player is ready to play,” he said.
“We have a good squad. We are playing with freedom because we feel the confidence of our manager. He believes in this team. We know he trusts all of us, so from Monday we already wanted to play.”
Mourinho was delighted with Herrera’s contribution against Manchester City after he came on at half-time and he may get the chance to feature again on Thursday night.
It’s about time the Spaniard stopped getting overlooked at the club as Mourinho started him in every pre-season game up to the Community Shield and was one of our stand-out performers.