David Haye has branded his Liverpudlian counterpart Tony Bellew a "coward" ahead of the upcoming fight between the two rivals, which will take place in the heavyweight division on March 4.
The two bitter rivals clashed during filming for Sky Sports News as they discussed their impending fight at the O2 Arena in London.
Haye said: "He's a coward, he realises what is going to happen on the night. I'm going to absolutely destroy him.
"It's all big talk prior to the fight. Now the fight is signed, I can already feel him cowering away because he knows the task in hand is too big, too strong, too fast, too powerful, and he's going to end up knocked spark out."
Bellew is not one to sit quite in these situations and was quick to respond by saying: "Are we talking about the same person? Listen here clown, there is only one coward here and that is you.
"Don't whinge about no sore toe this time. When the blows get traded, you'll get no excuses from me. You just be prepared to go to the level I'm going to go to.
"There are no cowards here, the only coward is you and that clown of a haircut. You're getting dealt with son."
'You'll see what my credentials are'
Haye is a previous WBC and WBA title holder at cruiserweight and, after unifying the belts in the cruiserweight division, he moved up to the heavyweight division where he went on to claim the WBA championship.
"Keep diminishing my achievements to make yours seem a little bit better, keep doing that," said Haye. "If you need confidence by saying I haven't fought anyone, you believe that.
"Don't worry about my credentials, worry about what you do in the ring. Don't worry about saying 'did you do this or that?' When the first bell rings, you'll see exactly what my credentials are."
This is not the first time the two boxing stars have come to verbal blows in recent months.
Following Bellew's successful title defence against BJ Flores in October, the 33-year-old launched a flurry of insults Haye's way, as the London knockout specialist watched on from ringside.
He told his post-fight interviewer: "He [Haye] has been conning the British public since this pathetic comeback of his [started]"
He then turned to Haye and said: "Them two guys you've just beat, they're in town now either working on the doors, or putting the bins away.
"They are a joke, and you are robbing everybody who pays to come in the arena."
The elite fight in British boxing is one that fight fans all over the world will be looking forward to. It will give the two heavy-hitters the chance to settle the scores once and for all.