Meanwhile, Paul Pogba has again spoken about his contract at United and Barcelona's interest. "He loves football", ex-France global Makelele said.
United fans are yet to see that same level from the midfielder on club level but there's plenty of time for that to happen. Although he was not quite as complimentary of Mourinho, Pogba was full of praise for Les Blues boss Didier Deschamps, who he credited for helping him change in a positive way.
But the United star has looked subdued on the pitch, recently missing a penalty in a 2-0 victory over Burnley at Turf Moor.
Pogba and his agent, Mino Raiola, both feel as though the player holds all the aces.
As a result, they would likely be more inclined to stick with Pogba and, if results worsen, axe Mourinho.
Adrien Rabiot's refusal to sign a new deal at the Parc des Princes was always going to keep his name in the rumor mill this season, but the 23-year-old's play might make it ever-present.More news: Trump, without evidence, rejects Puerto Rico hurricane death toll
January transfers are always hard to negotiate given clubs often have little or no time to sign a replacement.
There have also been reports of a falling out between Mourinho and United's executive vice-chairman Ed Woodward over transfers - the Portuguese boss had requested two players before last month's deadline but the club did not meet his demands.
Speaking to Sky Germany, Pogba said: "My future is now in Manchester, I still have a contract, I'm playing there at the moment, but who knows what will happen in the next few months".
And he took the bold step of admitting to problems between them. He told Telefoot: "To speak about a transfer..."
"One thing I can assure you: I will always give 100 percent, no matter which coach I always give everything for United - I cannot say more". We have common goals, which are to win.
"I always said to my players before they went: "While you're on worldwide duty do not comment about the football club, just concentrate on your country and don't contribute anything that may end up being controversial".