Gary Neville has accused Manchester United's hierarchy of "playing football manager with the biggest club in the world" and being "rotten to the core".
He has also blamed Ed Woodward, the United executive vice-chairman, and other board members for surrendering too much power to players and allowing "the tail to wag the dog".
The former United captain was reacting to an unconfirmed report yesterday that claimed Jose Mourinho would be sacked as the club's manager this weekend, regardless of the outcome of the Premier League match against Newcastle United at Old Trafford.
Neville has claimed United knew they would be getting a confrontational manager when they appointed Mourinho and believes the Portuguese deserves more support than he has received. The former England defender was previously critical of Woodward for failing to deliver the centre half Mourinho wanted in the summer transfer window, especially after awarding the manager a new contract in January.
"It comes to a point where this would be the fourth manager in six years," Neville said. "You have to look at who is bringing them in. The dressing room is leading what is happening. The tail is wagging the dog.