Brock Lesnar’s loss at SummerSlam was his last match on his current contract and the general expectation within WWE is that Brock Lesnar will now be focusing on preparing for his UFC fight against Daniel Cormier in early 2019, according to PWInsider.
However, WWE considers the door to be open for a potential return by Lesnar in the future, PWInsider added, and they would be happy to have him back after his time in the UFC.