He was left out of France's World Cup squad after making only four Premier League appearances after February.
The Chilean's arrival crushed Martial's game time, and happiness, which has resulted in the player deciding to depart Old Trafford in the coming months.
Martial's agent Philippe Lamboley confirmed to French outlet RMC that his client had chose to leave United after a hard couple of seasons working with manager Jose Mourinho, as he has become a regular bench warmer and struggled to make his mark when chances came his way.
"Anthony has a choice, I cannot say anything else on this subject at the moment but you can imagine that the moment that a player like Anthony comes onto the market, lots of clubs are interested". This is why the decision has come.
Martial has one year remaining on his contract, but United have an option to extend it by a further 12 months to 2020.
"However, it is quite obvious and it is very important to remember that he is under contract, that Manchester United will have the last word and that we will respect the decision of the club, and he will fulfil his commitment to them". Right now Anthony is disappointed because he has shown for three seasons the love he feels for the club and its fans. "Anthony just wants to play, to feel happy and connect with his coach, that is essential".
"After thinking about all the possibilities and scenarios, Anthony wants to leave Manchester United", declared Lamboley. It is important to remember that this season he scored 11 goals and gave 10 assists in five months. He was elected three times players of the month by the fans.
"I will not comment on the consequences of the January transfer window".
"Everyone will have his opinion, I think he must resume the course of his career". The time has come.