The 25-year-old’s post was widely interpreted as celebrating Mourinho’s departure and he was criticised by former United defender Gary Neville, who responded on Twitter by writing: “You do one as well!”, suggesting he should leave the club as well.
Over 64,000 people had ‘liked’ Pogba’s cheeky message, but he deleted the post 10 minutes later amid claims it was actually part of a marketing campaign for Adidas.
The controversy was an appropriately rancorous end to the World Cup winner’s stormy relationship with Mourinho.
Pogba joined United for a club record £89 million ($112 million) just weeks after Mourinho was hired in 2016.
But the former Juventus player was repeatedly criticised by Mourinho during his two-and-a-half year reign.
After his inspired performances helped France win the World Cup in Russia in July, Mourinho opted not to praise Pogba, instead infuriating the star by publicly asking why he did not try as hard for United.
Pogba was stripped of the United vice-captaincy earlier this season.
The pair were captured having a frosty exchange on the training ground as Mourinho grew angry with his key midfielder’s lethargic performances, dropping him on several occasions to spark talk he would be sold by the end of the season.