Typically if I kid is a mid-year grad transfer, like Tyler Wiegers, they move before the second semester starts. There’s another batch of GTs that will come available in May. Ryan Boyle will fall into this category.
Schools can’t contact these guys until they graduate. Players do put feelers out through family or friends though. That happened with Rudock. I have not heard of any late LB GTs at this point but we probably won’t hear about it until May or June. That’s when James Butler and Matt Quarells surfaced.