Lesnar reaches impass with WWE on contract
Although not necessarily an indication that it could come to fruition, today news came out that Brock Lesnar and WWE can not reach an agreement on a new contract:

For the past several months rumors have circulated that former UFC champion Brock Lesnar was considering a return to the Octagon. Although not necessarily an indication that it could come to fruition, today news came out today that the heavyweight and WWE can not reach an agreement on a new contract:
Brock Lesnar, whose contract with World Wrestling Entertainment has less than five weeks to go, walked out of the Bridgestone Arena in Nashville, without appearing as scripted and advertised on Monday’s Raw television show.
Sources close to the situation have said Lesnar and WWE CEO Vince McMahon reached an impasse regarding terms of a new contract, and neither would budge. The issue was described as resolvable, but not yet resolved. McMahon was attempting to sign Lesnar prior to his deal expiring, where, on the free-agent market, he could play WWE, UFC and Bellator against each other.
The company sent out a Twitter message, as well as put on its web site, and had a commercial air on the USA Network all less than 20 minutes before the live show, promoting Lesnar’s appearance. But as the show went on, there was no sign of him, and the announcers never said anything indicating he would or wouldn’t be there.
