I'm a SMU student, but I have been a Kentucky fan all of my life.
The situation with Kentucky hiring Cal and SMU hiring Brown are very different, but I am familiar with this turnover process.
When Cal came in, he met with every player. He wasn't afraid to tell them that they weren't UK material, and that they should look elsewhere. I think that Brown needs to do that here. As I understand sports scholarships are renewed annually. He needs to be frank to some of these lower talent players and tell them that they probably won't be getting playing time and should look elsewhere.
I hate to be critical with the players, because I personally know a lot of them, but if Brown is serious about recruiting and gets talented kids that want to come here, then he needs to suggest to some kids to transfer. Lingering around is just taking up a scholarship and slowing down the turnaround.