Stats? Probably at least half a dozen rookies. Guys like Ball, Simmons, Fox, Smith and Fultz will get major playing time. Tatum is going to have a more difficult time seeing the floor. I have very low expectations for Tatum being even in the top 3 for RoY because I'm not confident he'll get even 1,600 minutes this year.
However, I don't use the RoY to determine who had the better season. What I want to see is consistent and improving production on both ends on the floor. If he shows that then it's all good.