Martial’s agent, Philippe Lamboley, told French media the player has decided he wants to leave United, despite the club’s desire to agree a contract extension.
Lamboley said the parties have not been able to agree a deal in negotiations which stretch back to last year, but said Manchester United will have the “last word” on whether Martial remains at Old Trafford.
“I think that when Manchester United, which is the most powerful club in the world it must be remembered, do not find an agreement in eight months of negotiations, it is because they do not really want to make him an important member of the team,” said Lamboley. “That’s the root of this decision. It is a well-considered decision.”
Sky Sports News understands Tottenham have a long-standing interest in Martial, having tried to sign the player before he moved to United for £36m in 2015.
United manager Jose Mourinho put Martial among a number of players under criticism for a performance last season, but later praised the former Monaco forward stating it was “like having a new player”.
Martial finished the season with just 18 Premier League starts and nine league goals. He missed out on a place in France’s squad for the World Cup.