World heavyweight champion Usyk beat Joshua
in front of a sell-out crowd in London in September last year to claim the WBA,
WBO, IBF and IBO belts.
Following Russia's invasion of Ukraine,
which Moscow calls a "special military operation", Usyk returned to
his homeland to join a territorial defence battalion, raising doubts about a
rematch with Joshua.
However, Usyk said last month that he had
begun preparations for the bout, with the Ukrainian's promoter Alexander
Krassyuk telling Sky Sports that Saudi Arabia was a potential venue. read more
"We're in final negotiations for a
couple of sites for either the end of June or early-to-mid-July," Hearn
told British media on Friday. "I reckon within two weeks we'll have some
news in terms of where that's going to be.
"An option is in the UK. The difference
is, we don't really need negotiations with a venue in the UK, we just book
it."
The winner could be in line for a
unification bout with WBC heavyweight champion Tyson Fury of Britain.