Brock Lesnar has currently finished up his contract with WWE and is taking some time away from WWE to train for his upcoming UFC fight in early 2019. Things ended on very good terms and Vince and Brock even talked about options for the future. If Lesnar's fight doesn't go as well as he wants the door is open for him to make a return to WWE. Basically, Lesnar wanted the time off to train as much as possible and WWE didn't want to re-up on his contract and sink the money into Lesnar until they knew what his UFC future would hold. What this means for Paul Heyman's future is still uncertain.