DT Cavon Butler, from Toledo, OH, entered the transfer portal from Kentucky today. He committed early to Kentucky, but there were academic concerns, MSU and OSU offered late, and he visited both. It was never clear if the academic issues cleared up, but it appeared late that he was going to flip to one or the other, but then at the last minute signed with Kentucky anyway.
He redshirted last year as a true freshman (played in 1 game), so I think he would be eligible immediately, with 4 years of eligibility. Not sure if any academic issues linger.