The France international has been heavily linked with a move away from Old Trafford in recent weeks.
Real Madrid and Barcelona are said to be tracking the 25-year-old.
Pogba struggled to impress under Mourinho this season, with the Special One axing the midfielder from his starting line-up after a poor run of form.
And the United star has opened up on his relationship with Mourinho, with Pogba claiming he had to accept criticism from his boss.
“It was a better season that the previous one,” said Pogba, speaking at France’s news conference in Russia.
“It was an experience. There were some small issues with [Mourinho], but they were nothing in the end.
“Being a substitute, that sort of thing, it helps you to grow. I have to accept it.”
Pogba has struggled to take the Premier League by storm following his £89m return to Old Trafford in 2016 from Juventus.
The midfielder netted seven goals and chipped in with 11 assists in all competitions under Mourinho this season.
Pogba has been vocal on his future in recent weeks, with the France star refusing to rule out an Old Trafford exit.
“Stay at United? You’re never sure of anything. Contractually, it’s on, yes,” he said.
“Walking on the Parc des Princes? With a club, no for sure. Honestly, it doesn’t appeal to me.
“I grew up here, my father was a supporting Marseille and so did my mum. Paris wasn’t really in my daily life.”