If he is able to set good screens and dunk the ball (put backs, rebounds, ally oops) he will be a good offensive player. If he is able to do more, he'll be special on offense.
I'm in no way saying he isn't skilled, but people forget that being great on offense doesn't always require great skill. Shaq was GREAT on offense. Even guys like Jarret Allen and Rudy Gobert are good on offense. They don't need an offense to run through them, they make you stay honest on PNR, and they finish when they get the chance.
I don't know how skilled he is yet (really don't know), but if he can do those little things he can be a big + on offense.