https://fadeawayworld.net/nba-media/ben-simmons-could-play-as-center-for-the-nets-this-upcoming-season
I'm pretty sure the Nets are going to try out different starting lineups. So maybe Simmons will play a few games as a center, but it's unlikely he'll play that role throughout the season. At least I can't imagine how Simmons will compete with centers like Jokić, KAT, Gobert, Embiid, and others. By the way, it's funny that the Nets are already planning how they'll use Simmons, but they don't take into account that he might find some excuse to miss another season again.
There won't be one game where Simmons will play center. Zero, he will play point when he is on the court or at worst the 3, he is tall enough for it. Otherwise it creates too much of a mismatch when on defense. He can handle, that is his strength, why take that away, he would be useless as a 5 on the court.