CM Punk spoke with UFC announcer Joe Rogan at UFC 181 this weekend and revealed he has signed a deal with the leading MMA promotion. Punk said, "I have a limited window like all fighters do, and I'm here for a fight. This is my new career 100%." Punk said he will most likely be fighting at middleweight or welterweight but he will not be fighting at light heavyweight. The deal was finalized on October 22nd, which is when he was completely free from WWE.
CM Punk notes that he has an MMA background, "I have a background in kempo and I’ve been doing Brazilian jiu-jitsu for a long time. This is my new career, 100-percent. I'm going to go full steam ahead, all systems go after today, and it's going to be fun. I have nothing but respect for everybody here at the UFC, everybody who steps in the Octagon to fight. And when it's all said and done, when I'm finished, everybody's going to have to respect me because I have come here to fight."