During a post-match press conference, when UFC head Dana White was asked whether there was anything to Lesnar being at the show, White responded, "maybe" and smiled.
Later on, White admitted that Lesnar could be returning to UFC. He had a big smile on his face every time that Lesnar was brought up.
Lesnar is signed with WWE through Wrestlemania 29, although the current storyline is that Lesnar has quit the company and is suing them for money owed when Triple H revoked a verbal agreement between Lesnar and storyline general manager John Laurinaitis.
Also interesting to note that Paul Heyman was in Las Vegas this week.
Thanks to Rev and Daniel for their help.