French pundit Daniel Riolo believes Anthony Martial has failed to progress since moving to Manchester United.
Riolo says Martial is now a super-sub - at best.
He told RMC: "With Martial, we are still very far from his potential.
"We must still remember that when Martial went there (Manchester United), in his contract there was a clause in case he found himself in the top 10 of the Ballon d'Or. He is light years from that.
"He does not progress, he makes the end of matches, he is nothing better than a joker. He does not progress in his game with others. He did not progress in his football IQ.
"If he has to leave? Unless there is a new coach, and he ends up flourishing in this club..."