When the UFC made the shock announcement on Saturday night that Brock Lesnar would be returning to the organisation at UFC 200, there was just one key piece of information missing.
Although we know The Beast Incarnate will be stepping foot in the octagon on July 9, we do not yet know who will be his opponent.
It hasn't taken long for people to put themselves in the frame, however, and one of the first fight call outs for Lesnar has actually come from a fellow WWE Superstar.
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Rusev, another of the WWE's man mountains, took to Twitter on Sunday to put himself in the frame for a match against Lesnar - either in the octagon or the squared circle:
Of course, while the UFC will be delighted to have been able to prise away Lesnar from the WWE for one pay-per-view, Dana White and co. probably won't be rushing to get in touch with his Bulgarian peer about UFC 200.
Unlike Lesnar, Rusev doesn't have any notable experience in Mixed Martial Arts and his Tweet is - unless we're very much miscalculating the UFC's plans - simply a way for him to generate some of his own headlines as The Beast dominates the UFC/WWE news.
Coming at 6 foot tall and over 300 pounds, The Bulgarian Brute would, though, certainly fit the criteria as a heavyweight UFC fighter.
Much more likely is the idea of Rusev doing battle with Lesnar inside the WWE's squared circle.
Although they've never had any meaningful matches - meeting only at a WWE live event in February this year, and as competitors in the 2016 Royal Rumble - there is no reason why the two couldn't go toe-to-toe on WWE TV at some point in the future.
With the brand split throwing the future of the WWE's main roster into question, the idea of Lesnar vs Rusev on SmackDown or RAW is an intriguing one.
That, though, is still an unlikely prospect for Lesnar's next big WWE appearance, at SummerSlam in August.
The WWE confirmed over the weekend that The Beast is set to work the event, but, having been in the Heavyweight title picture for much of the recent past, it is unlikely he would return to battle it out with the current United States Champion.
As for who Lesnar could face in the octagon in July, the likes of Mark Hunt and Junoir Dos Santos have already been touted.