World heavyweight boxing champion Tyson Fury faces a long ban from the ring, over accusations his capacity bribed a witness in an investigation into his failed 2015 drugs test.
In 2017, Fury and cousin Hughie Fury both received back-dated two-year suspensions, despite insisting their positive nandrolone tests had been tainted by infected meat - a common alibi used by athletes in such cases.
But their case may now be re-opened, after the farmer who supported their story claimed he provided false evidence.
At the time, the Furys blamed their results on eating uncastrated wild boar or taking contaminated supplements.
Preston farmer Martin Carefoot provided two statements used in their defence, saying he had sold the boar meat to the boxers.
But Carefoot has told Mail On Sunday that the Furys promised 25,000 pounds (NZ$50,000), which he has never received.
"I have never kept wild boar," he said. "I have never killed a wild boar.
"I feel sick of the lies and deceit and the public need to know the truth."
Carefoot said he was prepared to commit perjury for the massive payout.
"They were dangling this carrot," he said. "I thought, 'you're going to get 25 grand for this, it's not a hanging matter', so I went along with it."
Fury's promoter, Frank Warren, has rubbished the claims, offering a somewhat different version of Carefoot's story.
Warren said the farmer had approached him last October, asking for payment to keep quiet, but he was told to take his complaint to UK Anti-Doping.
"How anybody can take this man seriously is beyond belief," said Warren. "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."
But UKAD has urged Carefoot to come forward with his accusations and seems prepared to re-open the case.
"We will always review any potential evidence in relation to any anti-doping offence and take investigatory action where necessary," it said. "If anyone has information that could be of interest to UKAD and its investigations on any matter, we urge them to contact us."