I'm pretty conflicted here as well. Why would Pettis want to fight Aldo as opposed to Henderson or Melendez anyway? If I were Aldo I'd be annoyed too. He's fighting guys that are Lightweights that haven't won a damn fight at Featherweight. It really makes no sense. Lamas deserves the shot in my opinion and has plenty of other contenders in the waiting like KZ, Swanson, and Lentz.
But Aldo really has no right to "refuse" a fight.