Roy Keane has accused the Manchester United team of not being good enough to play for the club after being knocked out of the Champions League by Sevilla on Tuesday night.
The former United captain said he felt Jose Mourinho needed three or four new signings to help them get back to being a force in Europe like they were when he was skipper.
Keane felt the players were not enjoying playing for a club where expectation levels remain high season after season.
"When I played for Manchester United, I always felt when you put on the jersey you felt great and you enjoyed the history and the pressure and the badge and the expectation from supporters," Keane told ITV.
"The manager will take responsibility. When you see him interviewed after the game, I don't think he was shocked because he's working with the players every day.
"He knows they are short to be one of the best teams in Europe. He knows that.
"You've got to work with what you've got and they are short three or four players.
"Some of the players playing for Manchester United now aren't good enough but it's not their fault.
"If you're selected, you're going to play for United but they are short at the top level and their record in the last three or four years will tell you that."
Keane believes one of the problems Mourinho faces is how to get the best from record signing Paul Pogba.
Pogba came off the bench and failed to provide the spark United needed as they crashed out of Europe to Sevilla.
"He's not the only problem," Keane said.
"But he is a big problem and if he can't get in the starting XI you're in trouble.
"He's come on and you expect good players to affect the game.
"He came on and done nothing. His reaction to the goal is like a schoolboy. He doesn't smell danger.
"The reason you're part of a team is that if one of your mates makes a mistake you cover for them, you make up for it.
"They are not playing like the great Manchester United teams and that was even on an off night, you can grind out a result.
"This team doesn't seem capable of doing that."