Don't know where others get the "unintelligent" part from him. He makes mistakes yes, (he's 20 duh) but with 13 league appearances (with 5 of them being subs) with a total of 700 minutes he's already registered 5 assists, and those assists aren't the result of the finisher's brilliance but due to the quality of his balls he provides. The only ones with a higher key pass average per game are Messi and Coutinho.
Comparing him with others with similar minutes:
Andre gomes (629 minutes):
Key passes per game = 0.2 (despite being an attacking midfielder)
Dribbles =0.6
Coutinho (approx. 900 minutes):
Key passes per game = 2
Key dribbles = 2 (Ousmane for comparison has 1.9 dribbles)
goals = 2
assists =5
Also has 11 starts
Ousmane (660mins)
Key passes = 1.5
Key dribbles =1.9
Assists = 5
Game is riddled with errors obviously, but one thing you can't deny his ability to provide creativity is immense and he's only 20! A player with that kind of end product isn't unintelligent. Tying in with another user's post, it takes awhile to get into his stride: he typically performs if he starts a match. His highest rated games are the ones he starts in. Out of the 6 starts he's had in 2018 in the league, he's assisted in 4 games and scored in one.