Ashley Young was caught on camera swearing at his Manchester United team-mates after he misplaced a pass in training.
The Red Devils wing-back, who was clearly having a bit of a laugh with the rest of the squad, scuffed a pass into the direction of Scott McTominay during a rondo.
But instead of holding his hands up to the misplaced ball, he rounded on his team-mates and shouted: "There's not a f***ing angle in any of you. F***ing hell."
None of the Manchester United squad respond to Young, although Marouane Fellaini could be seen giggling away at his team-mate trying to pass the buck.
The Red Devils have been on a brilliant run of form over the past few weeks since Ole Gunnar Solskjaer replaced Jose Mourinho in charge.
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The team has won its past six fixtures in all competitions and a sense of togetherness appears to have been instilled in the squad.
Former Manchester United forward Giuseppe Rossi was recently invited to Carrington to train with the Red Devils' first team.
Speaking about Solskjaer to PA Sport, the American-born Italy international said: "He brought back the Manchester United way, he brought back the tranquillity that maybe this environment needed."
"It's not an easy task to come to Manchester United, taking over in such a very critical part of the season and he's been doing amazing.
"You've just got to tip your hat off to him and his coaching staff that have done just an amazing job."