First, I'm pretty sure, not too many guys/gals right out of college, get to skip being a GA and get an assistant job. I'm also fairly certain that he wanted to go to learn from someone that is not from the Pat Summitt "tree".
I doubt he'd be going to Marquette if Pat didn't like the idea. Holly, providing she's successful, could coach 5-10 years. Who knows where Tyler could be by then.