Just my opinion on Grimes, which is not worth a lot.
I just don't see him as a Big 12 starter. I see him as a lot like Dale Bonner, a good role player who can contribute if he goes to another High Major program, but will remain a role player unless he develops his skillset beyond what he offers now.
I'm unsure the motivation for Bonner's transfer. It could have been that he just wanted to play closer to home and family. But if his motivation was to be a starter and gain more minutes, he should have transferred to a mid major where that had a much higher probability for achievement. Instead, he transferred into a similar situation and so he has started 0 games for Ohio State this year and is averaging 19.9 minutes a game, which is exactly 0.6 minutes a game more than he played for us last year (19.3).
I see a very similar path for Grimes if he elects to find a place with another Big 12 program or any High Major. I truly hope he assesses the situation closely, which in my opinion would be better to head the way of a mid major and much higher probability of starting and playing the kind of minutes he has said he wants.