Who Punk's next opponent will be is still to be determined.
Last month, Punk hinted at a comeback when he reacted to a UFC social media post about UFC 225. After the ECW experiment ended, Punk's career took off as he would win a total of five world championships, including a 434-day reign with the WWE Championship in 2011. The UFC and CM Punk will be hoping that he puts up a much better performance and secures a win in Chicago. He was immediately signed by the UFC, but his debut didn't go well by any standard. Punk has only one career UFC fight on his resume, a first-round submission loss to Mickey Gall at UFC 203 in 2016. He was was swiftly submitted in the opening round. He trains out of Roufusport in Milwaukee.
CM Punk looked like an amateur fighter in his Octagon debut.
The UFC has not announced a fight for Punk, but president Dana White previously has said he intends to give the 39-year-old "another shot".
If Punk does make his return at UFC 225, the show in Chicago would undoubtedly get a big boost from his star power should he fight on June 9. The main card airs on pay-per-view following prelims on FS1 and UFC Fight Pass, though the full lineup ands bout order haven't been finalized.