What I disliked most about him was how he fought for any ball. He throws his body around in a way that shows maximum effort and zero intelligence and technique, just jumping like a fish out of water in the general direction of the ball. Zero touch. He knows how to strike the ball and that's how he's scored some good goals but in those cases the cherry falls to his advantage by chance or from an effort of a more talented team mate. Those instances don't happen regularly enough for him to be a prolific striker. When he actually has to do something to get himself in a position to score he fluffs it as we saw a few times against Naples soccer.
He doesn't offer hold up play that makes big center-forwards important in the grand scheme of things tactically. He needs luck and that won't do.
By the way you can minus 5-6M of the 18M fee because Sassuolo were paying us to loan him. Then Marotta paid 18M.