WBO heavyweight champion Joseph Parker wants to unify all the belts as he believes he would have no problems in knocking out Anthony Joshua or Deontay Wilder.
Parker most recently defeated Hughie Fury in September in a majority decision win and has since targeted a fight with WBA and IBF champion Joshua.
Joshua, who most recently defended his titles against Carlos Takam in October, has also been open to a title unification fight as he hopes to become the first fighter to hold all four heavyweight titles.
Parker is also hoping for the same as the New Zealander outlined his goals of unifying the belts and becoming "the real champion" by knocking out the "robotic" Briton as well as WBC champion Wilder.
"Now I have the WBO, I want the WBC. I want the IBF. I want the WBA," Parker said, as quoted on BoxingNews24. "AJ (Joshua) is a fighter who is champion of the world."
"My goal is to unify. My goal is to grab his belts and to say that I am the real champion. I don't think I would have problems knocking them [Joshua or Wilder] out."
The two unbeaten heavyweights have been in discussions over a title fight in 2018 through their promoters.
However, Parker's promoter David Higgins recently revealed that Eddie Hearn's offer was too low for them, making the fight unlikely to happen.
Parker's camp were ready to offer a 60-40 cut in favour to "AJ" but Higgins claims the 28-year-old wanted to receive the entire gate, pay-per-view and sponsorship money.
"I don't think I've ever gotten the respect of being a world champion, but everyone is entitled to their own opinion," Parker added.
"I feel as a world champion I have achieved something incredible in our country and am very happy with what I have achieved. But I don't think I get the respect."