(CNN) Call him a glutton for punishment, but Mitt Romney is looking for another drubbing.

But instead of another campaign, Romney is jumping into the ring -- an actual boxing ring -- with ex-heavyweight champion Evander Holyfield, a Romney aide confirmed on Monday.

"It will either be a very short fight, or I will be knocked unconscious," Romney told the Salt Lake Tribune.

Romney, 68, will suit up and face the 52-year-old retired boxer for a charity event in Salt Lake City on May 15.

But don't expect a knockout, Romney said the pair will "spar around a little bit," assuring that "it won't be much of a fight."

Read More