During a pre-fight press conference yesterday, White was asked if Lesnar would be meeting with him this weekend. White coyly responded, "I don't know. I honestly don't know. Honestly, I don't know."
After leaving WWE the first time, Lesnar talked his way into a UFC contract and quickly became the UFC Heavyweight champion. Health issues caused by diverticulitis curtailed his UFC career with Lesnar announcing his retirement two years ago and eventually returning to WWE.
However, since returning to WWE, Lesnar has discussed returning to fighting for UFC with White, so it's not outside the realm of possibility that his deal with WWE (which is obviously structured uniquely for Lesnar to keep him happy) allows him to pursue MMA should he choose to do so.