I have compiled all the heavyweight fights currently announced (as per Sherdog & Wikipedia):
Fabricio Werdum vs. Cain Velasquez @ UFC 207 (title contender eliminator)
Walt Harris vs. Chase Sherman @ UFN 103 (Harris is probably fighting for his career here)
Viktor Pesta vs. Damian Grabowski @ UFN 103
Cyril Asker vs. Dmitry Smolyakov @ UFN 103
Andrei Arlovski vs. Francis Ngannou @ UFC on Fox 23
Adam Milstead vs. Curtis Blaydes @ UFN 104
Justin Ledet vs. Dmitriy Sosnovskiy @ UFN 104 (a very promising newcomer! He tko'd Alexsander Emeliankeno!)
Marcin Tybura vs. Luis Henrique @ UFC 208
Travis Browne vs. Derrick Lewis @ UFC 208
Junior dos Santos vs. Stefan Struve @ UFN 105 (uhm.. what the fuck?)
Now let's look at who's left in the heavyweight division. Roy Nelson, Brock Lesnar and Ruslan Magomedov are currently suspended. Mark Hunt is still pissed at the world, Gabriel Gonzaga is unofficially retired unless Dana pays up and Todd Duffee is still lying in some Octagon in San Diego. Stipe will obviously defend his title against the winner of Werdum/Velasquez II.
That leaves the following heavyweights without announced fights:
Josh Barnett
Alistair Overeem
Ben Rothwell
Oleksiy Oliynyk
Alexander Volkov
Daniel Omielańczuk
Timothy Johnson
Shamil Abdurakhimov
Anthony Hamilton
Jarjis Danho
Christian Colombo
Mark Godbeer
Chris De La Rocha
We've already seen Rothwell fight both Barnett and Overeem, so those matchups arent that intriguing anymore. From (perennially semi-retired) Oliynyk down nobody has the rank or name to deserve to be matched up with either Barnett or Overeem. Therefore it is clear as day that we will see those legends matched up against each other:
Josh 'The Warmaster' Barnett vs. Alistair 'The Reem' Overeem in early 2017
Quite incredible that those two who have both been fighting for 15-20 years and have been at the top of the heavyweight division for so long never faced each other before. This fight should happen before either of them retires, and with the division looking as it does, this is exactly what will happen.
To put it simply: Anything else makes no sense at all. And I for one am excited.
WAR BARNETT!