He also claims David Haye is only bluffing with his threats to quit boxing . Briton Haye maintains he will retire in October without facing Ukrainian Klitschko . Haye made the claims after Klitschko 's decision to fight Gabriel Chisora in September .
Wladimir Klitschko believes David Haye is only bluffing with his threats to quit boxing . Briton Haye maintains he will retire in October without facing Ukrainian Klitschko . Haye made the claims after Klitschko 's decision to fight Dereck Chisora in April .