British boxer David Haye spoke of his intention on Friday to become the sport's undisputed heavweight champion, priming himself for bouts against both Klitschko brothers.
Haye, 32, wants to unify all four belts and said the “best way” to achieve his goal would be to secure a bout against WBC title-holder Vitali Klitschko before a match-up with WBA, IBF and WBO king Wladimir Klitschko.
“The world needs one unified champion and I hope we can agree a fight at a football stadium in Germany this summer against Vitali,” said Haye.
Haye took the WBA heavyweight title after defeating Russia's Nicolay Valuev before defending his title on two occasions, but the Briton was on the wrong end of an unanimous decision to Wladimir Klitschko in a WBA-WBO-IBF title fight in July 2011.
Haye then subsequently retired before returning to defeat compatriot Dereck Chisora in London last July.
“After I have fought Vitali, I want revenge against Wladimir to be able to unify the heavyweight titles which hasn't been done in several years,” he added.