Good player on his day, but not worth the money. He is in the same tier as James, Coutinho or even Griezmann. These type of players don't really fit into today's game and would have been much better 20 or 30 years ago. Their best position doesn't exist anymore in modern football and they are not dominant enough to adjust your game to their needs like Barca has done for years with Leo.
Thrilled to see where he'll end up. Getting a player of his class for free is always tempting to clubs, but imo Serie A is the best league for him. Don't see him succeeding in PL or La Liga. Maybe PSG.