Mind you, nobody is technically replacing Damon since, as the film's director Tony Gilroy pointed out last October, "this is not a reboot or a recast or a prequel." In other words, despite the title, Jason Bourne himself is not in the movie and the eventual lead will be playing "a whole new hero."
So who will be taking over the popular film franchise?
According to Variety, though, Gilroy pretty much knows the kind of actor he wants, so the search should end soon. Then again, it pretty much has to—cameras are expected to start rolling this spring in order for the film to meet its targeted August 2012 release.