Joseph Parker will defend his world heavyweight WBO title against Hughie Fury in Manchester next weekend.
The British Boxing Board of Control has named British referee Terry O'Connor, the same official in charge of Hughie Fury's last two bouts to control the fight.
Parker says it's a "hometown" appointment.
"We're frankly appalled by this. We have petitioned the BBBoC multiple times to see sense but to no avail. Serious questions need to be asked of the BBBoC," Parker's manager David Higgins.
Higgins said a written request from the WBO to the BBBoC to follow its guidelines with regard to the neutrality of officials for world championship bouts has also been rejected.
"This appointment of 'home town' officials contravenes the WBO's guidelines that officials should be neutral, and clearly leaves the contest open to speculation about bias and impropriety," Mr Higgins said.
Joseph Parker and Hughie FuryJoseph Parker and Hughie Fury Photo: Photosport
"WBO president Paco Valcárcel wrote to the BBBoC politely requesting that 'the same procedure applied by the British Boxing Board of Control in the Anthony Joshua versus Wladimir Klitschko bout, should be used on this occasion'.
"Inexplicably the BBBoC has ignored that. This is disgraceful," said Higgins.
Higgins said the appointment of a referee who has controlled Fury's last two fights breached the fight contract.
"It's entirely contrary to the spirit of the deal and the letter of the contract struck with Hennessy Sports for the title fight, the governing principal being that it would be a fair fight.
"The entire world knows that Hughie Fury is going to run away from Joseph Parker, clinch, elbow, headbutt and do whatever he can to steal a result. Having a referee with whom he is familiar clearly provides an unfair advantage,"
"Mr O'Connor refereed Hughie Fury's last two fights, so it is patently inappropriate for him to have any influence over this world title fight.
"We might have expected this sort of thing had the bout been held in a banana republic, but to see this lack of neutrality and fair play in a nation like Great Britain is staggering."
Mr Higgins said Duco Events had lobbied BBBoC successfully to have a New Zealander added to the judging panel to balance the presence of a British judge, however the BBBoC had refused repeated requests to appoint a neutral referee.
"We've formally raised these issues with BBBoC and its response has been quite frankly pathetic. They could not provide an adequate reason why they did not want a neutral referee."
WBO guidelines state that for a world title fight officials should be 'not the same nationality or place of residence or origin of the Champion or the Challenger(s), or of their respective agents'.
"BBBoC has the final say over the appointment of officials for this fight and we want to know why they have ignored the WBO's quite sensible guidelines," Mr Higgins said.
"Furthermore, Peter Fury looked me in the eye, shook my hand and said he wanted this to be a fair fight with neutral officials. I'm sure he hasn't changed his mind about that. So why would the BBBoC appoint non-neutral officials against the wishes of both camps?"
This decision has angered Parker's American promoter Bob Arum Top Rank.
"There are some concerns there and then of course while the contract expletively provided that all neutral officials would be required," Arum told Newshub.
"The British boxing board said 'hell with the contract we are appointing a English referee and English judge' and that came despite a very forceful letter from the WBO saying that all neutral officials were required.
"When the English get on their high horse they get really haughty and there was no dealing with them. I just think having a English referee and a English judge puts Parker at a potential disadvantage."
"Neutral officials, the fight was in England and all the officials including the referee were neutral. How the British board of boxing control changes direction and says they don't care what is in the contract is monstrous and outrageous. The WBO has stood up well for Parker, I just think what is happening is wrong and intolerable and it should now warn fighters and promoters from all over the world to stay away from the United Kingdom."