All his good friends (Hill, Robinson, Clarke, etc) left this year. Sure, he's got some buddies on the team, but I don't see anything like that being a driving factor behind him staying another year.

If I were a betting man, I'd put money on him heading to Europe. I'd say a non-trivial chance he ends up at a blue-blood for a chance at a deep NCAAT run and then a non-zero but small chance he stays at VT for his grad degree and whatever other factors he deems important.