Anthony Joshua's promoter, Eddie Hearn, has set a two-week deadline for Deontay Wilder to accept a heavyweight bout with his client.
Ever since Joshua beat Parker in March, the two world champions have been trying to negotiate a deal that will see them finally go toe-to-toe.
Wilder laid his cards on the table by appearing to offer $50m (£37m) to his British rival, to fight in the United States.
Nevertheless, WBA, IBF and WBO belt holder Joshua wants the fight to take place on his home soil, with a September bout rumoured, should negotiations prove to be fruitful.
Should talks collapse, however, then Hearn is hoping to turn to a potential fight with Alexander Povetkin in the near future.
The Russian is set to be Joshua's next fight, as he is the mandatory opponent for the Watford-born fighter.
But Matchroom promoter Hearn has called a two-week deadline on negotiations for the proposed fight, which would arguably one of the biggest in the sport since the turn of the century.
And Hearn has now put pressure on Wilder and his management for the fight to be based in the United Kingdom.
Speaking to the Daily Mail, Hearn said: "We are probably about two weeks away from a decision on AJ's next fight. September has been earmarked for his return and all focus remains on Deontay Wilder.
"AJ and the team believe that after everything that's been built here, the UK should be the home of this historic undisputed bout and conversations continue with the Wilder camp.
"Povetkin is the likely choice if Wilder refuses to travel. Povetkin is the WBA mandatory so both fights are extremely dangerous.' A Wilder fight in the US stands as Joshua's most lucrative option, but he is willing to accept a lesser payday for home advantage."News Now - Sport News