CM Punk video: WWE star open to doing The Ultimate Fighter (TUF), talks Brock Lesnar's return to UFC and more

Ahead of this weekend's UFC on FOX 10 event, Ariel Helwani corners WWE star and mixed martial arts (MMA) fan CM Punk in Chicago and forces him to spill the beans on Brock Lesnar's potential return to Ultimate Fighting Championship (UFC), as well as his surprising answer to whether or not he would join The Ultimate Fighter (TUF) as a means to enter the world of professional fighting.