Haye close to Vitali showdown

BOXING: David Haye is close to agreeing a fight against WBC heavyweight champion Vitali Klitschko on 12 September.<br /><br /> Briton Haye pulled out of his original 20 June bout with brother Wladimir after suffering a back injury in training.<br /><br /> But with Wladimir facing a mandatory defence of his IBF title against Alexander Povetkin, Vitali looks the more likely opponent for a September showdown.