Michael Carrick reportedly clashed with Paul Pogba on the training ground, following Jose Mourinho's sack at Manchester United.
Mourinho was fired on Tuesday, just 11 months after signing a new deal at Old Trafford.
Pogba, who had been dropped by Mourinho for his last match against Liverpool, was slammed after a post emerged on his social media account shortly after the Portuguese's dismissal.
It is understood that the Frenchman was also high-fiving his teammates when news of Mourinho's sack broke.
Now fresh reports have suggested Pogba was mocking Mourinho during the session on Tuesday, before being reprimanded by Carrick, who took charge immediately after the decision to pull the trigger.
The UK Sun claims Pogba shouted "He f***** with the wrong baller" during the session at Carrington.
But Carrick, who will remain part of the coaching team under interim boss Ole Gunnar Solskjaer, confronted him immediately.
It is alleged he told the World Cup winner that United are bigger than any player or manager, before reminding the squad anyone could be moved on if they fail to meet the standards set at Old Trafford.