The 25-year-old was substituted at half-time of last weekend’s Premier League match against Brighton & Hove Albion, where he had started for the third consecutive match this season.

He has injured a hamstring, which means he will miss the next four to five weeks and the start of United’s Europa League campaign next month.

In a statement on social media, Mount said: “During the last game I picked up a minor muscle injury.

“I’ve had it checked and it looks like I’ll be out for a few games. Leading up to and during pre-season, I worked hard to get my fitness back to where it needs to be and I felt re-energised, sharp and ready.

“I wanted you to hear it directly from me how frustrated I am, as I expect you are too. I will do everything possible to be back in the best shape and help the team.”

Mount moved to Old Trafford from his boyhood club Chelsea in a £60m deal last summer but his first campaign was hampered by injuries, restricting him to just 14 Premier League appearances.