Gary Neville has accused Manchester United's top stars of acting like "babies" when they concede a goal as problems continue to mount for Ole Gunnar Solskjaer.
The Red Devils were beaten 4-2 at Leicester City on Saturday, their third defeat in their last five games.
Solskjaer named a starting XI, harshly criticised by Neville, that included Cristiano Ronaldo, Bruno Fernandes, Jadon Sancho, Paul Pogba and Mason Greenwood.
The former player turned pundit claims United's forwards react "poorly" to goals - citing their demeanours after scoring and conceding.
He said on Sky Sports: "This Manchester United team are also really poor at reacting to goals, if they concede a goal they are a little bit like babies and they all start doing their own thing.
Man Utd produced a below-par performance at Leicester on Saturday
"If they score a goal, they all puff their chests out and think here we go and the egos come out."
Neville continued with his scathing criticism of United's forward line, highlighting the huge difference between them and title rivals Manchester City and Liverpool.
Those teams are known for their work off the ball, something that has set them apart, whilst Solskjaer's team left gaps on Saturday which Leicester were able to exploit on numerous occasions.
Neville added: "After half-time there was a massive change. Manchester United's performance in attack was consistent throughout the whole game, however, their defence in the second half had a big change.
"At half-time they've gone in and either Solskjaer has said get higher up the pitch and press them, get against that back three, or the players have gone rogue and decided themselves.
"Manchester United from 50 minutes in were 'baggy', there were spaces everywhere. There was no intensity, they were walking around the pitch, particularly the front players, they think they are better than they are.
"When I watch Liverpool and Manchester City the players sprint. United were so open and disconnected, a pattern began to emerge where the front of the team was disconnected from the back.
"The front five, the egos, the world class players (were disconnected) from the back five. United ended up with a non-compact unit which Leicester found easy to play against.
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"So you have individual errors, you have Maguire struggling and you then have a disconnected team."
Solskjaer, who selected Maguire despite his lack of fitness and sharpness, admitted he made mistakes at the King Power Stadium.
Nevertheless he lamented the way his side were cut apart by the Foxes.
"The four goals we conceded were very poor," he told Sky Sports.
"When you concede goals like that in the way we did, we don't deserve to continue that run. Definitely the performance was very below-par and not good enough."