Lancashire farmer Martin Carefoot told the Mail on Sunday he was asked to say he supplied wild boar to Tyson and his cousin Hughie Fury, who both tested positive for the banned steroid nandrolone in February 2015, in return for a cash payment.

Carefoot said he never received the money and provided evidence to UKAD stating that he had supplied the boar, despite never doing so.

Promoter Frank Warren has dismissed the allegations made in the report as a "load of rubbish".

The two boxers blamed what they said was contaminated meat on their failed tests, which led to them accepting backdated two-year bans following a compromise agreement.

Neither were charged by UK Anti-Doping (UKAD) until June 2016 and were allowed to resume their careers in December 2017.

Tyson Fury became unified champion of the world in November 2015 - nine months after the positive test - after beating Wladimir Klitschko.

The case involving Fury, who beat Deontay Wilder to win the World Boxing Council heavyweight title in Las Vegas last month, and his cousin attracted considerable scrutiny.

The way the case, which cost UKAD almost £600,000 ($736,000/€661,000), was conducted was also the subject of widespread criticism.

In a statement sent to the Mail on Sunday following the newspaper story, UKAD said: "We will always review any potential evidence in relation to any anti-doping offence, and take investigatory action where necessary. 

"If anyone has information that could be of interest to UKAD and its investigations on any matter, we urge them to contact us."

Fury's promoter Warren said the allegations made by Carefoot were "outrageous" and claimed the farmer had asked him for money.

"The farmer making these outrageous allegations sent me a letter last October, full of errors and basically telling me he had committed perjury by signing statements under oath and lying," Warren said in a statement.

"When I called him, he asked for money. 

"I told him to clear off and get in contact with UKAD. 

"He chose not to speak to UKAD but instead speak to a newspaper.

"How anybody can take this man seriously is beyond belief. 

"Tyson has never met this man in his life. 

"What a load of rubbish. 

"We'll leave this with UKAD to look into and don't expect it to go any further.

"It looks like while the football season has been paused, there's nothing to write about and silly season has instead commenced."