Manchester United interim manager, Ralf Rangnick, had to end training early after two players were pulled apart following a “shocking” bust-up this week, the UK Sun reports.
Rangnick is set to take charge of the Red Devils for the last time when they face Crystal Palace in the Premier League.
United are currently sixth on the log and will fail to win any silverware for the fifth year in a row.
While the players have not been named, they are believed to be “senior” members of the squad, with the fight leaving many of their teammates “stunned”.
The bust-up allegedly happened towards the end of Thursday’s training at Carrington, with the session then cut short and all the players told to get changed.
As they do not play this weekend, the Manchester United squad were given four days off following Sunday’s dismal 4-0 defeat to Brighton.