Evander Holyfield calls out both Wladimir and Vitaly Klitschko

Evander Holyfield has claimed that he could beat both of the Klitschko brothers.

Wladimir and Vitaly hold the IBF, WBO, WBA and WBC heavyweight crowns respectively, but the 49-year-old Holyfield believes he is more than a match for both Ukrainians and called them out in an interview with L'Equipe.

"For both [Klitschkos] it's is only about where they can get the biggest purse. Well they won't get the biggest purse against second rate boxers, but against me, because I am the best known active heavyweight boxer," said Holyfield.

"I want to retire as heavyweight champion of all federations. I could beat them both."

Holyfield is slated to fight in Brazil in December against a currently unnamed opponent.