Puig is at a crossroad in his career. At this point he is more of a celebrity than a professional footballer. The coach who was said to dislike him is gone and now Xavi is there, who is playing the exact same guys that came to the surface with said coach. Pedri and Gavi have started games for the Spanish national team already. Nico is in contention for it too if he continues like that. Puig wasn't even a regular for the youth national teams. Pedri, Gavi and Nico are just better talents than him and also more focused on football.
Didn't want to write it so far but someone I know (not a friend, the classic rich kid) and follow on Instagram is doing his exchange in Barcelona. He has already posted 2 selfies with Puig and some videos too where you could see him in night clubs. And not only during international breaks. If some random guy from Austria knows, Koeman surely knew too with the network of people he has in Barcelona. And Xavi will be aware too.
Now I can understand that it is frustrating to train week after week and not playing much, but he has to make a decision if he wants to have a career as a professional. He literally hasn't played much in the last 3 seasons and if he doesn't move to a club where he gets actually enough playing time he won't progress and he'll play some years for a lower league Catalan side rather than having a career in La Liga. I'd rather take the Alena or Denis road and have a career somewhere else than not accepting the fact that I'm not good enough until it is probably too late.