The Spaniard has earned an international call-up and has thanked the Portuguese boss for helping him into Julen Lopetegui’s side.
Mourinho’s men have endured a shaky start in the Premier League, but Herrera has been excellent and has done a great job of adapting to his new defensive role alongside Paul Pogba in midfield.
Speaking about his impressive form, Herrera claims he has Mourinho to thank.
“We have a saying in Spain: you catch the liar before you catch the lame man. It’s true in life and even more so in football. If a coach is not straight, players soon find him out. Mourinho is very straight,” he said.
“He says what he thinks and he says it to your face. He says it when it is something we will like, but he also says it when it is something we won’t like.
“The team is enjoying the day to day. Training is very dynamic and everything is with the ball so the players never lose concentration – there are no really long sessions or long team talks.
“He really understands what a footballer needs which is 20 minutes of team talk and then you get down to it.
“I have come here because Mourinho has given me the opportunity to take on a new position and I feel comfortable with it.
“I’m more defensive now, playing in front of the back four. I think I have that ability to win the ball back quickly when we lose it. I have taken a leap forward at United which has allowed me to get into the national side.”
United are currently sat sixth in the Premier League and are six points off the Premier League’s top four.
After his Premier League suspension Herrera will undoubtedly be looking forward to returning to the side against Arsenal after the international break.
Hopes are he’ll be able to make his senior Spain debut against England at Wembley on Tuesday night and carry his confidence into the clash against Arsene Wenger’s men next weekend.