The 26-12 months-old France forward, who joined United from Monaco in 2015, has started out most effective two Premier League games this season and has scored just as soon as.
Martial's representative, Philippe Lamboley, executive director of USFA Management, advised Sky Sports News: "Anthony needs to leave the membership in January.
"He just wishes to play. He does not want to stay in January and I will talk to the club quickly."
Martial nevertheless has at least three years left on his contract at Old Trafford, having signed a new deal in 2019 that includes an choice to extend for a similarly yr.
He has fallen down the pecking order at United, who have an array of attacking expertise to select from, including Cristiano Ronaldo, Edinson Cavani, Marcus Rashford, Jadon Sancho and Mason Greenwood.
While he did now not mention Martial by using call, United interim supervisor Ralf Rangnick hinted there can be departures in January while he turned into requested about the bloated length of his squad on Friday.
"It's nevertheless a big squad. We want to ensure that players need to live here," he said.
"If they see they're no longer getting enough sport time right here, it would make sense to speak to gamers in my view and spot if a loan deal may make experience, however right now it is too early."
Rangnick additionally revealed that injured United midfielder Paul Pogba is still around four weeks away from returning to motion.
Pogba has been present process restoration work in Dubai after struggling a thigh harm on international responsibility with France closing month.
