The widely held belief is that Brock Lesnar would be immediately booked into a rematch against Alistair Overeem if he decides to return to UFC. Overeem was the person that defeated him for the heavyweight championship before he decided to retire from MMA and return to WWE.
In a move that might have been encouraged by Dana White to promote the potential return, Alistair Overeem called out Brock Lesnar after defeating Frank Mir at a UFC event this past weekend. Lesnar is attempting to work with WWE on making his MMA return possible.
While rumors of his MMA return have died down a little since making his on screen return to WWE, it appears that Brock Lesnar is still in discussions with Dana White about making a return to UFC. Apparently, he's trying to do both industries at the same time.
It is being said that one of the things that is preventing Brock Lesnar from making a return to UFC is his deal with WWE. The belief is that Vince McMahon has Lesnar on an exclusive deal, where he would not be able to compete in mixed martial arts during that tenure.
With rumors swirling about a potential return to UFC, former world champion Brock Lesnar has become a topic of discussion within WWE, as management is still hoping for him to work a big money match against the Undertaker at Wrestlemania 30.