Joseph Parker has rejected Tyson Fury's offer for sparring after deciding he's a different style of fighter to upcoming opponent Anthony Joshua and therefore not adequate preparation for their fight.
Parker (24-0, 18KOs), who takes on Joshua on March 31 at Cardiff's Principality Stadium, is currently in Las Vegas undertaking his prefight training camp.
Fury has since offered his help on social media as a potential sparring partner for the New Zealander in the build up to the clash, but the WBO heavyweight champion has turned down the offer.
"Tyson Fury's a great guy, but with all due respect to him, I don't think it's the right person to spar because he moves around well for a big guy and he doesn't come forward, and he's a lot taller," Parker told Radio Live.
"So I think Kev [trainer Kevin Barry] and our team have done some research and we found guys that we think that doesn't have everything Joshua has, but each of them have bits that we can see or help us prepare for what he brings.
@joeboxerparker I've got a show on the night your boxing in England but if you want I'll come spar you when your in uk training for the fight, it wil help both me & you, you won't find better sparing than me I promise you. Let me know pal?— TYSON2FASTFURY (@Tyson_Fury) January 18, 2018
"We want guys to come forward and we can just smash them, and for them to throw everything at us -- the kitchen sink -- and just try and knock us out.
"But with Fury, as the fighter he is, he's a smart fighter who doesn't stand there, who doesn't absorb a lot of punches and likes to move."
Parker's most recent appearance in the ring came in his majority decision victory over Tyson's cousin, Hughie Fury, in Sept. 2017.