Trainer Peter Fury has told Sky Sports that the only destinations in the running to stage the rematch between Tyson Fury and Wladimir Klitschko are the United Kingdom and the United Arab Emirates.
Since Fury shocked the boxing world by beating Klitschko to claim his three world titles, there has been plenty of speculation regarding the second contest between the pair.
Germany - which staged the first bout in November - was believed to be a front-runner, but Fury's revelations suggest that a different country will hold the summer showdown for the WBA and WBO belts.
Fury said: "We are trying to locate and secure the venue and get moving forward. I'm hoping sometime soon we can get it announced. Nothing is set and it all depends on the venue.
"The fight is going to take place in one of two places; it's either going to be in the UAE or in the United Kingdom. It's a toss-up between the two and talks are ongoing. The best package will take it. It's just about maximising revenue."
The winner of the rematch is scheduled to meet either Luis Ortiz or Alexander Ustinov, but Fury has already stated his desire to meet WBC champion Deontay Wilder before the end of 2016.
Anthony Joshua is also a possible opponent for the victor should he defeat IBF title holder Charles Martin at London's O2 Arena on April 9.