Even the highlights of this Roque are not impressive (not only me, read the comments). Very average skill player. Aggressive without the ball, that's ok, but otherwise average - no impressive speed, dribbling, technique, passing game - nothing.
This is the big concern. But he is the best forward of his age group (18-21) coming out of SA right now- for better, worse or alternatives.
I'd say his most impressive traits are his mentality, workrate, strength and shooting power from any position. Doesn't need alot of backlight and can be off balance yet release a cannon on target.
He has things that can take him to the top leagues but not necessarily the skillsets that typically make it at Barca.
It's a risk for sure seeing as he doesn't look like he can effectively play out wide like say for example Nicolas Jackson who has become trendy of late, or even Marcus Thuram.