Scott McTominay has revealed there were some honest discussions in the Manchester United dressing room following their derby-day defeat to Pep Guardiola's men.
A brace from Kevin De Bruyne and Riyad Mahrez secured a vital three points for Manchester City at the Etihad on Sunday.
United put in a promising first-half performance as Jadon Sancho cancelled out De Bruyne's opener before the Belgian restored City's lead at the break.
Ralf Rangnick's men were well in the contest at the halfway stage, but the visitors were non-existent in the second half as City put the Red Devils to the sword.
And McTominay admitted there were some harsh words exchanged in the United changing room at full-time, especially over their dismal display in the second period.
"My point of view is we gave away the ball too much in the second half," McTominay told Sky Sports.
"Every time were gave the ball away they were just keeping it for 15 or 20 passes and then we found it difficult to get the ball back. In the first half, we created good angles, we moved the ball well and we had numerous amount of chances
"The most disappointing thing for us is how sloppy we were in the second half and that's been spoken about in the dressing room. When you come to a place like this, you know you're still at the game at 2-1, you can't give the ball away that easy
"Whenever you do that, you get punished. It comes down to individuals, it comes down to concentration, it comes down to how we deal with the expectation of playing for Manchester United and we can't continue playing like that."
Gary Neville and Roy Keane didn't mince their words either when assessing United's second-half performance and the former United players reckon certain individuals "threw in the towel".
But McTominay, who was taken aback by that suggestion, insists it's incredibly disappointing to hear those claims.
HAVE YOUR SAY! Was Keane and Neville's assessment of Man Utd's showing fair? Comment below
He told Sky Sports: "From my point of view, on the pitch, it's hard to see what's going on around you but if that's what people are saying then so be it.
"They're all entitled to their own opinion but, for myself, it's incredibly disappointing if people think that.
"I'll have to watch it back and see body language and things like that but, for myself, it hurts. If you give a team like that all the time in the world in the second half, you're gonna get punished. It's as simple as that."
