Maybe Nick Diaz turned down the fight because...

The Perverted One - 
MMA Lives Here - Nick ducked Condit. It was the biggest fight available for his ranking, legacy and banked account and he ducked. Guess he wants to fight a wrestler, not a hitter. Phone Post 3.0
Lol nick bitch slapped Condit you think he's scared of him Phone Post 3.0

LOL

MMc AA -
Willo232 - 
MMc AA -
Willo232 - 
MMc AA - Stop making excuses for him. He bitched and moaned about an opponent running away from him, then when he is offered to fight and redeem himself he rejected it. If this was anyone else but Diaz the UG wouldnt be making excuses for him they'd be calling him a pussy or hypocrite for moaning then rejecting the opportunity when it is presented.
If Georges turned down a fight right now i don't think the UG would be in flames.. Nick is retired man, get over your butthurt. Phone Post 3.0

GSP has never accused another fighter of being scared or running away from him.
You do know what the word retired means right? Phone Post 3.0

"I'll be back in May" doesn't sound very retired to me.
So dana saying "he said he might, maybe be thinking about may" means he is coming back in may? Dont hold your breath mate.. Phone Post 3.0