Pogba comes off contract at United in June.
Speaking to HorseRacing.net, McManaman said: "It goes without saying, if Paul Pogba was available on a free contract, a lot of teams would be very interested in him.
"I think the Premier League will still be better than the Spanish league next year, even if Real Madrid go and sign Mbappe, the quality of the Premier League will still be stronger.
"Both player and agent will probably be better paid if he left, and knowing Pogba's agent, the way he is, and that the player will be able to leave for free at the end of the season, that would suit him."
He continued: "Personally I'd like him to stay in the Premier League and play for Manchester United because he's a star player with a big name and reputation, and everything that comes with that makes the Premier League more watched and more exciting, whether you like him or loathe him.
"His brand - along with Cristiano's - makes the Premier League better."
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