While answering fan questions via his facebook page, Arrow actor Stephen Amell responded to one particular question about whether he would consider crossing company lines to appear in a Marvel Cinematic Universe film. Said Amell (at the 7:05 mark in the video below), "Sure, why not? I'm up for roles -- movie roles -- although I've never really read Marvel Comics and I was always a DC guy even before I was a DC guy. But it's not like if I got offered an awesome Marvel superhero, I'd be like 'No, I can't.'"
Amell also reiterated that he's unsure what the future holds for Arrow after next season because the show was always planned for five seasons. "We were always built to be a five year show, which is a very courageous thing to plan for when you're just in the pilot stages of something. But that doesn't mean that we can't go six or seven [seasons]. I can't really picture beyond that. But we'll see. I'm having a blast."
Arrow returns from mid-season hiatus on January 20, 2016 with Season 4, Episode 10, "Blood Debts".