You're setting the bar way too low. Let's break it down. Just off of offensive rebounds and putbacks, he should be able to get 2 buckets (4pts) a game. From the FT line I'd say another 4-6 ppg. And another 6-10 ppg off the offense, whether it's dump-offs for dunks, post ups, or short jumpers. So, if it plays out like this he should be able to get on average anywhere between 14-20 points per game. Being a good rebounder isn't necessarily just off size. A lot of it has to do with positioning and activity. IF Omier can do those 2 things well, he's athletic enough to average around double digits boards next season.