I have real issues with talented players like him who only shows up when they want to. I had the same reservations about Ndombele even if he was a bit more consistent with Lyon.
Of course, he's still young but far too often it shows a state of mind that prevents this kind of players from reaching the highest level. When his team dives, he dives with everybody and doesn't show a whole lot of guts or personnality. With a player like Puig for exemple, you could sometimes say "Barcelona is terrible but he brings something to the table". When Lyon is poor, he's equally poor and he's one of many reason why the ended up at the 7th spot in ligue 1.