Manchester United legend Roy Keane has criticised Ralf Rangnick's decision to bring Juan Mata off the bench instead of giving a youngster a chance against Chelsea.
The Red Devils played out a 1-1 draw with Thomas Tuchel's side at Stamford Bridge in a game which saw several academy stars on the bench due to United's injury concerns.
Alejandro Garnacho got his chance off the bench, but Juan Mata and Phil Jones were brought on over Hannibal Mejbri, Shola Shoretire and Alvaro Fernandez.
Keane was particularly unimpressed at the decision to bring on Mata, but also had pops at Nemanja Matic who started the game, and Jones following the game.
He told Sky Sports: 'Today we're talking about Matic who is being interviewed after the game about leaving. There's three games to go, stop talking about you're leaving you made a statement a couple of weeks ago.
'Mata's come on for Man United again, he's come on the last few games. You've got some young kids on the bench get them on it's like a tribute to Mata I thought it was his testimonial tonight.
'You're Man United you're fighting for points. You're playing for pride. It's all like 'we'll give him a game, we'll bring (Phil) Jones on,' everyone gets a round of applause.
'You're trying to win a game of football. Forget all this 'we'll give someone 20 minutes because he's leaving in a few weeks'.
'Actually, you should have left two years ago. A few of them. Yet they're all coming on getting there little 20 minutes.
'Mata comes on and I know Gary (Neville) was praising him, he had a few touches, but get some of the young lads on.
'Hopefully they'll be there for the future and get a taste of playing at Old Trafford. Mata's leaving in a couple of weeks, you brought him on last week. Mata's not going to change the game.'
Mata, along with Matic, are set to leave the club in the summer with their contracts set to expire.
United's fiery former captain Keane questioned the decision to sign Mata to a new one-year deal last summer.
He said: 'He should have left last year. But last year they gave him another year I don't know why.'
'It's a job for boys, he's pals with this, or the chief executive, who's giving out these contracts, crazy.'
Keane also had time after the game to have one last pop at Matic, who confirmed he will be leaving the club this summer.
During his post-match interview, Matic said that United will always be in his heart, as well as Chelsea due to his spell at the Blues from 2014 to 2017.
Keane said: 'Matic was talking about leaving, 'I've had a great time. Man United will always be in my heart and oh and Chelsea as well by the way, and Benfica don't forget them'. They can't all be in your heart.
Despite United's below-par display, particularly in the first-half, Matic said it marked an improvement.
He said: 'Yeah I think obviously it was an improvement. We played against a very good team that are tactically almost perfect, technically also they have great players and they also have a great manager.
'I think we played a good game. I wouldn't say we were much better than them, but it was an equal game.
"I think 1-1 is a fair result. They had more opportunities than us, but I think 1-1 is a fair result. It is always tough when you play against good teams, so we expected a tough game, but tonight we looked much better than the last couple of weeks.'