World Cup-winning Pogba is back at Carrington after he was allowed an extended break following the tournament in Russian Federation. The Catalan club are working on deals to sell Aleix Vidal, Yerry Mina, Andre Gomes and Paco Alcacer to raise the funds to bring in the World Cup victor.
Mourinho and Pogba were often at loggerheads last season, and now The Times report that their relationship is strained again after the United boss criticised his midfielder during, and after, the World Cup.
The Red Devils re-signed the French star in a club record £89m deal from the Italian champions in 2016.
The Portuguese harshly criticised some of the younger players on tour with his team in the United States, while he has also warned the board over their lack of activity in the transfer window.
If the 55-year-old does not last at the 20-time Premier League champions this campaign, perhaps he would consider taking on an worldwide job, something he has not done before.
Pogba's agent, Mino Raiola, is now in Manchester in a bid to push the complicated operation forward.More news: World Cup star cancels Gunners’ medical proposal ahead of move
"I don't think it's about us getting the best out of him", Mourinho told ESPN FC. Thank you. He's my friend, I grew up with him.
"Why? Because it's closed for a month, where he can only think about football". 'Isolated from the external world, isolated from commercial compromises and isolated from every possible influence'.
In theory, Barcelona would have until the end of the month to sign Pogba before the transfer window closes in Spain.
Pogba's agent, Mino Raiola, is now in England to guide the 25-year-old out of Old Trafford, and negotiations are expected to be fully completed before the window closes next Thursday, according to Mundo Deportivo.
With Mourinho known for not staying at a club for longer than three seasons, fans seem to be wary ahead of his third campaign at United.
However, Mourinho disputed suggestions that it's down to him to get the best out of Pogba.