I doubt Dembele would ever top the goalscoring charts in the Prem, but he’s a good finisher who can score all different type of goals.
He’s also a physical handful for defenders, so would offer a physical presence in the box, and therefore another way to score goals other than just counter attacking, and also a decent focal point for the attack, which the likes of Rashford, Martial, and James can thrive off in the space he could create.
Looking at his goal record, age, and physical attributes, he would be a good signing IMO.