Four-time champion Holyfield, 49, has not fought since beating Brian Nielsen in May 2011, when he repeatedly called out WBC champion Vitali Klitschko. “If I don’t get a fight lined up by this year, I retire,” he said on Tuesday while attending an open training session here for WBA regular champion Alexander Povetkin.

Klitschko has reportedly said he will not fight Holyfield because the American was his hero in his youth. Holyfield insisted he was still capable of beating both Vitali and Klitschko.