Kiwi heavyweight Joseph Parker has sent a stern message of intent to Anthony Joshua, saying his "sole mission is to smash to bits the man with the glass chin".
The WBO champion is currently en route to London where he is expected to sign a deal which would see the two fighters put their belts on the line in a unification bout.
Both camps have been in talks for months trying to negotiate a fight which would see Parker put his WBO belt on the line while Joshua puts the WBA an IBF ones on the line - along with their unbeaten records.
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Parker has previously spoken out about Joshua's suspect chin, which saw his promoters, Duco Events, release a video montage showing Joshua getting dropped in training.
Speaking to the Telegraph before departing Auckland Airport, Parker said his team were 'just delivered the facts'.
"All we have said is that Joshua has a glass chin. We know it, he knows it, everybody knows it, they just don't talk about it," Parker told the Telegraph.
"We saw him get dropped by Wladimir Klitschko but he still had the heart to get up and finish the fight I'll give him that but if I catch him and hurt him I'm not going to give him the chance to recover.
"I won't be letting him off the hook. If I get him in the trouble Klitschko had him in, there is no chance for him. I'll go in fast, I'll go in hard, and I'll go in for the kill. He won't be able to recover against me."
Parker knows that he will be the underdog heading into the highly anticipated heavyweight bout, but he's claiming it would not be an upset if he beat Joshua
"I feel if I win it will not be a shock. I do think it is my time and I'll come there confident in my ability. I genuinely believe I can knock him out and there is no pressure where I'm standing right now. There is no expectation on me, no pressure.
"All I'm focused on is being in great shape, training hard and doing my best to knock him out and catch his glass jaw," Parker said.
"This is my sole mission: to smash to bits the man with the glass chin. Our team has come up with this feeling and this theory that he has a glass chin and my goal is to smash his glass chin, crack it and see if he can withstand the punches that are coming his way. I really can't wait for this fight."
The fight is expected to take place the Principality Stadium in Cardiff on April 1 (NZ time).