David Higgins, the promoter of Joseph Parker, claims Anthony Joshua is "refusing to compromise" in their talks about a possible fight.
Joshua's promoter Eddie Hearn recently suggested a deal was close to being finalised which would see his WBA 'super' and IBF title holder go up against WBO champion Parker in a unification fight in 2018.
As it stands, AJ is refusing to compromise and has drawn a line in the sand that we think is unreasonable. It's not worth me coming to London.David Higgins
But it now seems a bout is no nearer being finalised as Higgins revealed that their offer to take a 35-65 split in favour of Joshua was still not viewed as acceptable by the British boxer.
Therefore, if Joshua fails to relent then there seems little chance of the 25-year-old New Zealander getting in the ring with him.
"We started at what we thought was a fair ratio, and then a concession was given on our side," Higgins told Sky Sports.
"The truth is we were getting pretty close, and then there was talk of me going to London, but I made it clear I won't unless there was a concession on the Joshua side.
"Frankly we thought there would be, but no, it's been signalled there won't be. As far as we're concerned, that's it for now. I won't be boarding a plane until we are closer."
He added: "As it stands, AJ is refusing to compromise and has drawn a line in the sand that we think is unreasonable. It's not worth me coming to London."
Meanwhile, Joshua is priced at 4/7 to defeat Tyson Fury should the pair meet and is 1/3 to beat Deontay Wilder if that fight takes place.
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