I'm not that worried about selling him, and €30m+ is a good deal. He's not a generational talent, probably not even an extraordinary one, and I don't see him becoming a player that could carry our team in the future. If you look at where the game is headed, slow / average-paced wingers just cannot cut it anymore, and I think he is a Dybala-type of player (less talented tho), and I just don't see him making a difference on the wing game in game out. If he would play as AM that would be different.
What I'm more worried about are his replacements that we are targeting. Really unaspiring. Probably even lesser players than him. So yes, I would rather keep him in light of the players that we are targeting to replace him, but we all know our financial reality.