Anthony Joshua and Oleksander Usyk are putting the final touches to contracts which would see them face each other on September 25, according to reports.
The Ukrainian is Joshua's mandatory challenger for the WBO title, the end goal for both in their unified world heavyweight title clash.
And The Athletic claim both camps are now reviewing the contract, which reportedly states the September date for the fight, which is likely to take place at the Tottenham Hotspur Stadium in London, a 62,000 capacity arena.
British heavyweight Joshua's has been forced to shelve plans for a massive unification showdown with Tyson Fury after the Gypsy King was ordered by a court ruling to take part in a trilogy fight with Deontay Wilder.