Anthony Joshua and Tyson Fury have both signed a two-fight deal to face each other this year to determine heavyweight's undisputed champion.
After being in negotiations since December, ongoing talks seem to have been completed with a venue and date the only thing to be finalised now.
Promoter Eddie Hearn told Sky Sports: "All parties have now put pen to paper and we will be working hard over the next few weeks to confirm the site and date for the biggest fight in boxing."
Fury said: "Whatever they say is very unimportant to me because, until I have a fight date and a hell-of-a-lot of money in my pocket, there is no fight.
"Will I be fighting Joshua in the next ten minutes? No. Do I think the fight will eventually happen? Yes, it has to happen. Do I think it is next or imminent? No.
Middle East remains favourite to host bout
Hearn has revealed interest from eight countries worldwide to stage the event but it is Saudi Arabia which remains in pole position.
Hearn promoted Joshua's rematch victory over Andy Ruiz Jr. in December 2019, with the Middle Eastern country paying a site fee of $40million to host the contest.
"I actually feel we've done the hard part," Hearn told ESPN.
"Speaking for myself, Anthony and his team at 258 management [258 MGT], I know how hard we've worked these last couple of months and I just feel that this fight is so big it's not a difficult sell.
"We've already had approaches from eight or nine sites. The offers have come from multiple countries in the Middle East, from Asia, Eastern Europe and America."
"This is the biggest fight in boxing and one of the biggest sporting events in the world," Hearn said. "It will be a major, major win for a country that wants to showcase itself."
More to follow...