Tyson Fury has accused Anthony Joshua of being a “coward” as uncertainty grows over whether the long-awaited all-British heavyweight fight can be finalised for November.

The heavyweight rivals had been expected to meet later this year, but negotiations have stalled over the venue. Joshua and Matchroom promoter Eddie Hearn have signed a contract for the bout to take place in the United Kingdom, while organisers are understood to favour staging the contest in the United States.

“I’ve been down to fight at every location that’s been mentioned – England, Ireland, Vegas, New York, back to England, back to Ireland, back to New York,” said Fury, per the BBC. “Listen, I’ve said yep, yep, yep, yep, yep, every single time. Zero stipulations.”

“The facts are I feel like you’re being a coward. I feel like you don’t want the fight and you’re just conning everybody. I feel like you’ve been doing that for years,” said Fury, who also told Joshua to “sign the contract, big boy” in a separate post alongside former heavyweight champion Mike Tyson.

Fury’s promoter Frank Warren has maintained that the 38-year-old has committed to the contest, while Hearn has previously said the contracts would need to be renegotiated if the fight is moved outside the United Kingdom. “It is signed by Tyson,” said Warren, according to Sky Sports News. “Tyson is signed up for the fight and agreed for the fight.”

Fury kept the prospect of facing Joshua on track by defeating journeyman Mariusz Wach last month. Joshua, 36, is a former two-time unified heavyweight world champion, while a meeting with Fury has been discussed repeatedly over several years without the two British rivals previously reaching the ring.