Since he left Pogba's spoke highly about both the club and the city (said he's got many mates here and felt like a mancunian, and that he was saddened to leave but felt he needed to for the sake of his career). There are no burned bridges here, so the only question is whether he's interested or not.
Edit: here's the interview, from January 2015:
"I'm impatient," Pogba, 21, told FourFourTwo. 'It was the feeling I had. The coach (Ferguson) had faith in me but didn't put me on. He said that I was too young.
"He said 'your time will come' but it never did. It didn't come. But it does not mean I will speak ill of Manchester United. I love the club."
In an earlier interview, Pogba had said the final straw at United had come when Ferguson picked full-back Rafael ahead of him in midfield.
Pogba said: "It was a very, very difficult moment for me because I was in love with Manchester and I was a Mancunian.
http://www.telegraph.co.uk/sport/fo...r-United-but-they-never-gave-me-a-chance.html