Now that Edward Norton is definitely out of the Avengers movie project, speculation is running rampant around who will be the next actor to play the Incredible Hulk.

Joaquin Phoenix has been mentioned as one possible Hulk - though he’s supposed to be retired from the filmmaking biz. Now, new sources say Mark Ruffalo is being considered for the role, though no formal negotiations have been conducted.

Ruffalo has been seen in films such as Reservation Road, Shutter Island and The Brothers Bloom and is currently appearing in The Kids Are All Right. Reps for Marvel and Mark Ruffalo have offered no comments on the rumor.