There is nothing official yet, but if you are to believe this tweet Cathal Pendred will be the first to get into the octagon with CM Punk.
This punk is going to be 'one & done' in the UFC. It looks like I will be that one. #JustWonTheLottery pic.twitter.com/KVvwe2WXqE
— Cathal Pendred (@PendredMMA) December 10, 2014
Pendred record is 15-2-1.