Dutch head coach Erik ten Hag blasted his Manchester United players ahead of their game against Arsenal at the weekend.
The Red Devils put in a spirited display against the Gunners on Sunday, but lost 3-1 at the Emirates Stadium after several close refereeing decisions.
Ahead of the game, Ten Hag admitted that mentality and attitude was more of an issue for his side than tactics.
Ten Hag said: One of the reasons why I was not pleased was because the front and back didn't do their jobs. We got stretched and we have to improve that. We have to be more compact otherwise you can never counter-press.
I had a problem with how the defence moved and I had a problem with the response in the defensive transition of our offensive players. It is definitely attitude. You improve by being demanding and matching standards. That is what I demand.
Last year they showed they can do it in almost every game - and I expect it even more. We can't make compromises because then you become vulnerable and you don't win games."