Jose Mourinho was to blame for the breakdown of his relationship with Paul Pogba, according to the midfielder's brother.
The Portuguese was sacked by Manchester United, after the club's worst start to a season in 28 years.
Fractures in his relationship with Pogba began to emerge in September, when the France World Cup winner was stripped of the vice-captaincy, before both men were filmed having an animated argument on the training ground.
Now, Mathias Pogba, who plays for Tours in the French third division, has lifted the lid on the relationship behind the scenes, by claiming the former manager's ego dominated the dressing room.
"It was Mourinho who was the problem. Mourinho still wants to be the centre of attention. The problem was Mourinho, right down the line.
"In the locker room, outside the locker room...everything, I know my brother, and you tell him, 'Go. Go play ', the rest, he will do it.
"From what we see of Mourinho, he always wants to be the maestro, the centre of attention.
"(Paul) does not even calculate that aspect: you respect him, he will respect you, you trust him, he will produce big performances," Mathias Pogba told RMC Sport.
Pogba has scored four goals and laid on four assists, as United won all four of Ole Gunnar Solskjaer's first four Premier League games in charge.