What do you mean? As far as I can remember he's not done much wrong off the field. His problem though is that he's done very little to live up to his price tag. He's a headless chicken in the final part of his game, however I am 100% confident Guardiola will iron that out of him and he will become what we have bought him for.
I know little about Sane so I'll trust Guardiola's judgment, however the prices players are currently going for I would suggest £37m for a young, exciting German international is good business.