The "Daredevil" star will not sign on to direct the film because he's currently busy with the post-production stage of 'Argo'.
Warners is currently looking for a director to helm the project. Affleck was last seen in 2010's 'The Town', which he also directed and wrote.
His upcoming directorial stint include "The Stand", a big-budgeted adaptation of Stephen King's novel.
He has also been attached to an untitled Terrence Malick project, which is said to be a romantic drama also starring Javier Bardem, Rachel Weisz and Rachel McAdams.