Anthony Joshua and Tyson Fury are set to meet in their long-awaited heavyweight mega-fight later this year.
Joshua will make his comeback with a bout against Albanian heavyweight Kristian Prenga in Riyadh on 25 July before facing his British rival.
Eddie Hearn, Joshua's promoter, posted on social media: "Signed, sealed and delivered! AJ vs Fury is on!"
He described it as "the biggest piece of business we've ever done but more importantly the one we've always wanted".
"Biggest year of AJ's career coming up, the comeback is on," the promoter wrote.
Hearn, who did not confirm the date or location for the bout, has previously told Sky Sports that November was the date they were targeting.
Hopes will be high for another British stadium fight, with the contest being shown on Netflix.
Ring Magazine said the fight was a "done deal" and would take place in "Q4, 2026" in a social media post on Monday.
Joshua, 36, and Fury, 37, are two of the biggest names in British boxing and, after a decade of circling each other amid aborted attempts to agree a showdown while still in their prime, they will collide in a contest Fury has called "The Battle of Britain".
Fury first became a heavyweight world champion when he upset Wladimir Klitschko in 2015.
Joshua turned professional after winning Olympic gold at London 2012 and rocketed through the professional ranks, but by the time he picked up his first world title belt in 2016, Fury had stepped away from the sport.
Later, after Fury returned to the ring and became WBC world champion, the pair were close to agreeing to fight for the undisputed world heavyweight championship as Joshua held the unified IBF, WBO and WBA championships.
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That proposed contest fell through, and Fury fought Deontay Wilder for a third time, while Joshua lost to Ukrainian Oleksandr Usyk, who later beat Fury.
Fury, who retired again at the start of last year, returned to the sport with victory over Arslanbek Makhmudov in London earlier this month.
Joshua has been waiting for the all-clear to resume full training after being injured in a road accident in Nigeria in which two of his close friends and members of his team lost their lives.
The two-time world champion had been on holiday following his knockout victory over US YouTuber turned-boxer Jake Paul in Miami on 19 December.
He is now in camp working with his former rival Usyk, who has backed AJ to beat Fury, Sky Sports said.
(c) Sky News 2026: Anthony Joshua and Tyson Fury fight confirmed
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