( CNN ) -- WBA world heavyweight champion David Haye has branded his IBF , WBO and IBO counterpart Wladimir Klitschko a `` robot '' and said the Ukrainian will `` malfunction '' in their unification bout in Hamburg on Saturday . Haye , 30 , was talking at the final press conference ahead of the duo 's highly-anticipated face-off , with tensions clearly running high between the two fighters . `` It 's going to be fun to watch this big robot start malfunctioning , '' the London native told reporters . The pair were due to get in the ring in 2009 , before Haye was forced to withdraw with a back injury , and the Englishman said he is happy the fight did not take place two years ago because he is now in much better shape . `` I 'm healthy , my speed is ridiculous , punch power is there , and I 'm just in a really good place , '' he said . `` I 'm happy the fight 's happening now and did n't happen a couple of years ago because I am so much more of a better fighter now . '' Klitschko acknowledged his opponent was in fine physical condition , but the 1996 Olympic gold medal winner said Haye will be the 50th knockout victim of his professional career and that the experience will make him `` a better person . '' `` I will knock your butt out back into reality , which is good for your future life , '' said Klitschko . `` You 're going to become a better person , a better man , with better behavior and you 'll be on time . '' The Semey-born boxer was referring to the fact that Haye was 30 minutes late for the press conference , and Klitschko went on to say : `` He was late for half an hour today , we 've all been waiting for you princess . '' The tension rose further when Wladimir 's brother Vitali , the WBC heavyweight champion , stood up and asked Haye whether he would be attending the post-fight press conference . `` Please , promise , in front of many journalists , that you 're coming to the press conference after the fight ? '' Haye responded : `` I 'm coming for you [ Vitali ] after the fight , make sure you 're there . '' Vitali famously faced a British fighter in 2003 , when he lost to Lennox Lewis by technical knockout after the end of the sixth round . Former world amateur championships silver medallist Haye has previously said he will retire before turning 31 in October , but `` The Hayemaker '' has also expressed a desire to defeat both Klitschko brothers before hanging up his gloves . British cruiserweight Carl Thompson defeated Haye in their fight in 2004 , his only career loss in 26 professional clashes . Klitschko will be looking to avoid a fourth defeat of his pro career , having won 55 of his 58 bouts . The fight will take place at the Imtech Arena , home of Bundesliga football club Hamburg , on Saturday .
David Haye has branded Wladimir Klitschko a `` robot '' ahead of their fight on Saturday . Haye said it will be fun to watch the Ukrainian `` malfunction '' in Hamburg . Klitschko said Haye will be the 50th knockout of his professional career .