Manchester United captain Harry Maguire admits he's copped a fine via teammate Nemanja Matic.

Maguire is joined on the fines committee by experienced Serbian midfielder Matic as the pair look to keep a close eye over proceedings at the club's Carrington training base.

But Maguire has revealed how he was once hit in the pocket by Matic for using his phone in a no-go area at Carrington, a fine he still disputes to this day.

"I've been fined once which is still debatable," Maguire told the official Utd podcast. "It's crazy but I let Nemanja do it. I took the hit and put the money in the pot.

"When you meet in the gym before training for pre-activation you are not allowed your phone. We did pre-activation, I didn't have my phone.

"But then you go outside to put your boots on and you aren't allowed to go on your phone in that period. I had my phone and carried it out with me.

"I wasn't on my phone because straight after training I was going to put my trainers back on and go up for a massage instead of coming all the way back.

"I could have gone straight to a massage and Nemanja fined me for that. He's strict with everyone so I'm happy. I can set the standard."

Maguire and Matic run a tight ship at Carrington, and they keep their fines system simple, but on matchday the punishment is even more severe.

The 27-year-old added: "We have lates for training, meetings and travel. They are the three big ones.

"We mainly have one set fine but double on match day. I just like to keep it simple. If you have too many fines it ends up too messy."