He hasn't got a future, because he decided that himself.
Talented boy, no doubt. Was the hunger there, though? I'm not sure.
I think it says a bit about him that he decided to call it quits. On the one hand he's smart. There was a 95% chance he wouldn't make that decent a sum of money, so going to further his education, move on up etc. was a wise choice. Good luck to him. However quitting at a young-ish age is a little defeatist for me. Maybe he could have given more to tennis, and perhaps tennis would have given more to him.
Just my thoughts. As I said, good luck to Mike in whatever he does next!