Basically, Painter's departure sort of frees up time, but not enough to be a deal maker in my opinion. Leslie is the key to big minutes at State. If he stays, there won't be more than 10-15 minutes (at the most) available to Jefferson next year. If Leslie goes, Jefferson will compete with Harris for the starting spot.
It definitely hurts State as a team, though. Painter was the only guy suited to play both PF and C for them. So he provided a very useful player off the bench. They were going to potentially have a very deep and versatile frontcourt with Painter, Vandenburg, and Harris coming off the bench and De Thaey available in an absolute crisis. Now, it puts a lot more importance on Leslie returning and Harris/Vandenburg/De Thaey being useful backups.