Who could be MMA’s biggest draw if Brock Lesnar retires?

Regular Lowkickers remember the question I asked last week. Can MMA’s elite be as
popular as Manny Pacquiao? Now is the perfect time for someone to step to the plate
with the biggest draw in our sport’s history now out indefinitely. As announced in
an emergency UFC conference call, Brock Lesnar for a second time has been diagnosed
with diverticulosis. For the main event at UFC 131, Lesnar has been switched with
Shane Carwin to face Junior dos Santos.

Now I’m no medical expert by any means and all my info