Wayne Rooney has questioned whether the players understand the system, and claimed that United are going backwards under Amorim who has won just eight of his 31 Premier League games.

'We just watched it a lot of the lads who played the game today, and I don't think anyone can understand and comprehend what is going on,' said Rooney, who was in South Korea for a legends' game with some of his old United teammates.

'We are all watching it, and we all struggled to give what we see how Man United play. What are the patterns? What are we seeing what might improve the team moving forward? We have all played the game at the highest level and it is very difficult to see that.

'Speaking to Rio (Ferdinand), we want to support the team and the manager the best we can, but we also have to be honest as the fans are not fools.

'The problem with this system is having two in midfield.

'One is Bruno who is a fantastic player and scores so many great goals. He has been Man United's best player in the last couple of seasons, but you do want to see him further forward.

'If you're struggling, you have to put three in midfield and give yourself a chance to compete in there. They're getting overrun and overpowered in that midfield.

'Unfortunately for United and the manager, it has been not too far off a year now and it is less than one point a game. Quite a lot of league seasons that is relegation form. I will try to defend it to a certain point, but I am struggling to find the words to do that at the minute.'