UFC announced that the June UFC 225 pay-per-view event would take place in Chicago. Former WWE Superstar CM Punk responded to the post on Twitter seemingly teasing that maybe he could be involved with the event.
— UFC (@ufc) February 4, 2018
As previously reported, Punk has been training for another fight and Dana White recently stated that he would give Punk another chance. If UFC wanted to easily sell tickets in this market, having Punk on the card would certainly do so.