If people are still waiting for Martial to be this super player then I can only wish you the best of luck. Keep waiting.
Look at other forward players at other clubs and their attitude. Forget 'potential' (whatever that means..), just attitude.
Martial never went to the World Cup last summer... and has relatively few injuries. The guy thinks he is better than what he actually is. In my opinion, he has lowered the expectation of a man united player. Lazy, poor mental attitude, moody, and has no impact on the team or the players around him. AND.. he isn't even THAT good !!! Look at Son at Spurs, Mane etc... I would prefer Richarlison, A Troy Deeney... . Rondon at newcastle... Calvert-Lewin at Everton.. Barnes or Wood at Burnley and you know why? because they all have a better attitude than Anthony Martial. Week in, week out.. You will get more from them. I am not suggesting we buy these players, I am simply making comparisons in terms of other Premiership forwards.
Martial is a joke to me. Over-rated, massively.