The UFC can't (or won't, rather) afford Tyrone Spong. He makes more money in a one night GLORY tournament than top UFC fighters do fighting 3x a year. The UFC would have to offer him 100k+ a fight for him to sign an exclusive contract.
After Spong's WSOF contract runs out, I expect him to sign with Bellator if he plans to continue MMA. He's already hyped up a fight with Rampage, and it could be put on PPV.
Tinobar's Avatar. Ariyama ducked me once. I met Hidehiko Yoshida at the airport. R'hllor is the one true MMA God.
"OoopsaDaisey, you're definitely a Heavyweight!" - Alistair Overeem, UFC Expo 2012.