"It depends," the director told MTV News. "It's not a Marvel/Edward thing, it would be really be about, well... We told the story of the fugitive, what's the next step in the story?"
"It can't just be 'Don't make me angry, you wouldn't like me when I'm angry,'" he explained. "That would be a problem if you do the same thing over and over again. Edward's never done the same movie twice, so I don't think he would do that."
However, the director did go on to say that given the right material he's sure that Norton would be more than happy to return as Bruce Banner, "If you find something interesting — yeah, I'm sure he would be back. He's a fanboy. He's as big a fanboy as you and me, maybe even more."
However, Leterrier wasn't optimistic about the odds of making another Hulk movie anytime soon, "The box office for 'Incredible Hulk' was great, but it wasn't so big that you had to make a sequel," he said.