Originally Posted by ThePowerCosmic
Well on the Trask viral site it mentions sonar being a mutant ability. That is one of Banshee's abilities, so personally, I think it hints at him. Caleb said he wouldn't be returning, but didn't the dude playing Havok say the same thing back then? I really think he'll return in DOFP.
Actually Lucas Till was the only one from the First Class cast (except for the core four) who didn't say anything if he's gonna be in DOFP or not.