If I was a neutral, I think it makes sense for him to leave. Twice the club has shown they'll sacrifice him for any new shiny toy. First Zlatan comes in and takes his number, now Sanchez takes his position and benches Martial when he was in good form. There's no path for his desired position which is CF with Lukaku at the club. He has every right to leave. We've failed him with the brand of football from LvG and Mourinho and must make him feel dispensible.