A writer may be already attached to the highly anticipated script for The Justice League, which is expected to hit theaters some time in 2017..

David S. Goyer, who upset fans with the ending of Man of Steel, fueled rumors about his involvement with The Justice League movie after his recent speech at the BAFTA and BFI Screenwriter's Lecture, according to The Hollywood Reporter.

"Might be, can't say," Goyer said when asked if he was working on the Warner Bros. and DC Comics superhero film, which could feature Superman, Batman, Wonder Woman and Green Lantern.

The rumors were spurned further by Goyer defending the decision to make Superman kill General Zod at the end of Man of Steel, which upset purists who believed the superhero is not a killer based on mythology.

"We were pretty sure that was going to be controversial," he said. "It's not like we were deluding ourselves, and we weren't just doing it to be cool. We felt, in the case of Zod, we wanted to put the character in an impossible situation and make an impossible choice."

He also explained that filmmakers wanted to nicely set up the hero for future films. 

"Our movie was in a way 'Superman Begins,' he's not really Superman until the end of the film," he said. "We wanted him to have had that experience of having taken a life and carry that through onto the next films. Because he's Superman and because people idolize him he will have to hold himself to a higher standard."

He explained there was no other sensible way to end Man of Steel. Final seasons in the movie showed Zod telling Superman he was not going to stop causing havoc and harm until he killed the Man of Steel or the other way around. No prison on planet Earth could contain the villan and in the film Supermn could not fly to the moon. Goyer added, "and we didn't want to come up with that crutch."

How that ending will effect Clark Kent in the upcoming Superman vs. Batman, or The Justice League Movie remains unseen.

Goyer's previous writing credits include Christopher Nolan's The Dark Knight trilogy.