After having a great pre-season he disappeared a bit once the season started. After that reported pep talk from Koeman after the Cornella game to believe more in himself, he is showing signs of improvement and more and more looks like the Trincao of Braga.
Wouldn't say his finishing isn't that good. I'd even say it is decent. Many of his shots are well-placed, but he often has the problem that his shots get blocked by a defender last second. Of course he had his bad misses too, but who does not? I'd say his shooting is more accurate than Dembouz', who has a range from top-corner to parking area.
He is very good at dribbling in tight spaces, which is very important at Barcelona with many teams parking the bus. Of course he is not as fast as Dembele, but I don't think lack of pace is an issue as he is technically very gifted to beat defenders by skill. He is still notably faster than Coutinho, who definitely is too slow for a winger.