On Saturday, Manchester United will play in the eighth round of the Premier League and meet Leicester.
Manager Ola Gunnar Solskjaer's team will be missing its two opening brakes due to injuries.
After losing the injured Harry Maguire more than two weeks ago, yesterday the Reds suffered another blow from Manchester, when French stopper Rafael Varane was injured in his right leg during the League of Nations final in the French uniform.
He was replaced in the 43rd minute, after a short treatment on the pitch, and although he got up on his own and went down to the dressing room on foot, United fear he will not be fit in the near future.
The initial diagnosis speaks of a muscle tear, and the Frenchman may be absent not only against Leicester, but also from the Champions League game in the middle of next week against Atlanta, and immediately afterwards against Liverpool in the league.
"We are done without him," Manchester fans said on social media, and this headache now rests on Solskjaer, who needs a quick fix, despite the hope that Warren will recover faster than expected.