According to a report from Dave Meltzer, the mooted super-fight between Jon Jones and Brock Lesnar cannot take place until the summer of 2018 because of several logistical issues.
The Beast Incarnate cannot take a UFC fight in the near future because of his situation with USADA and his WWE commitments.
There was some back and forth between Jon Jones and the Beast Incarnate before UFC 214. However, this story didn’t capture the imagination until the Jackson-Winkeljohn standout knocked out Daniel Cormier and issued a challenge to Lesnar during the UFC broadcast.
Brock Lesnar was suspended for one year because he failed two drug tests for Hydroxy-Clomiphene. He then retired in the middle of the suspension and subsequently left the USADA testing pool.
This, in essence, means that Lesnar needs to pass six months of USADA-administered drug tests before he can step into the Octagon.
However, even if the Beast Incarnate were to re-enter the USADA testing pool immediately, he wouldn’t be in a position to fight after the completion of his suspension because he would be prominently featured in the Royal Rumble, scheduled for January 28, 2017, and WrestleMania 34, scheduled for April 08, 2017.
Since he also needs an uninterrupted training camp that lasts at least two months, Lesnar won’t be able to fight until mid-June at the earliest.