Pogba and Mourinho have been embroiled in a series of incidents which first began last week when the midfielder was blamed by the Manchester United boss for the 1-1 draw with Wolves.
The France World Cup winner hit back by claiming United should attack more in home games but was then stripped of his role as deputy captain by Mourinho and left out of the squad which faced Derby in the Carabao Cup on Tuesday.
United then crashed out of the tournament on penalties to the Championship side.
On Wednesday, Mourinho appeared to rebuked Pogba in training for posting a video on Instagram of himself with Andreas Pereira and Luke Shaw watching the Derby game from the stands.
Pogba then started for United against West Ham on Saturday but failed to impress and was taken off in the second half of the 3-1 defeat.
And it’s since been claimed Pogba has told his team-mates he is not ready to back down in his battle and not play for Mourinho.
In his weekly team of the week, Garth Crooks hit out at Mourinho and said he is at fault for their current problems.
Crooks told the BBC: “Jose Mourinho refers to his team as fragile but what he fails to realise is that it is he who has caused that fragility.
“You keep humiliating Paul Pogba, your star player, in public and then substitute him in another show of public defiance.
“Of course he becomes disillusioned and angry and that unsettles the rest.
“There’s only one winner here, and it’s not you Jose.”
United face Valencia on Tuesday in the Champions League and Mourinho welcomes the prospect of getting back to winning ways.
“For myself, speaking of my own feelings, I am really happy that we have a game on Tuesday,” Mourinho said.
“I am really happy that I now start immediately thinking about training tomorrow and about the match on Tuesday.
“I prefer that to only playing next Saturday, with one week of these bad feelings.
“I look forward to that match on Tuesday and I hope the majority of the players have this same kind of mentality, and that they are looking forward to Tuesday.
“I have no complaints with the players’ attitude.”