On the ball he's already one of the very best players in the world and his advanced statistics showcase that pretty well, in the very top percentile as far as dribbling, key passes, shot creating actions, (and whatever creative statistic you can think of) are concerned. His assists number is also quite unfortunate because he's vastly vastly outperforming that in term of expected assists.
As far as technical ability goes, I legitimately believe he's the most gifted player since Neymar JR. Pinpoint accuracy on longpasses, endless creativity, can receive the ball in any angle, two-footed to the point where not even Lyon fans can agree on whether he's a leftie or a righty
But he's also a player who was perhaps too talented for his own good in youth categories, which led to him taking the habit of being quite lazy off the ball. He's been slowly improving that aspect of his game but even right now playing him as a winger is a huge risk because there's bound to be a point in the game where he'll leave the opposing fullback or winger unchecked. He mostly works better as a 10 or false 9 due to the fact that his defensive weaknesses aren't as much of an issue at these positions.
Overall I think he'd greatly benefit from joining a club with a more demanding dressing room and higher standards that can push him to train and work harder on the pitch. He can also definitely improve physically. It's pretty clear he has a few pounds he needs to lose in order to gain a bit more quickness. He's already gliding past players as of right now but if he ever gets that extra bit of burst he'll pretty much be impossible to defend against.
