Tony Martial is now very much the 'busted flush'.
Injuries, loss of form, and an attitude that at times seems all but indifferent, especially in terms of defensive duties; not only does he not like doing his shift in this respect, he gives the impression that he has no intention of 'mucking in'.
It would appear no one else wants him (or can afford him) he certainly doesn't appear to want to be put in the shop window and so will continue until his contract terminates. Rumour's abound about how he is a favorite with one of the Glazers, this would certainly have not helped with his management, if it's true!
He seems to have never got over Rashford replacing him out wide on the left, he has a times shown he could lead the line in the centre better than Rashford, but it has been limited exposure and fleeting at best. Whatever his mind-set now it seems permanent. Playing him out wide now is just giving a third choice 'cut in' winger a place when others who are better at that skill should always be ahead of him. If he could demonstrate an ability to hit the bye-line and lay-back balls into the box for others run on to, then he could re start his career... but I wouldn't hold my breath on that!