Officially, it's Cooper's schedule filming David O. Russell's American Hustle, along with press commitments on The Hangover Part III, that are the cause for the move. Turnaround of this level is extremely rare, though, and clearly there's something really rotten going on that nobody is talking about. Cooper would have played John Bishop, the leader of a gang known as the Bishop Boys. Noah Emmerich plays Bill Hammond, who turns against the gang and comes home with a back full of bullets. When the Bishop Boys come looking to finish the job, Bill's wife (Portman) turns to an old lover (Edgerton) to help defend her home.
Producers are looking at Tom Hiddleston, Tobey Maguire, and Joseph Gordon-Levitt as potential replacements, but this film now has such a stigma attached to it they may find it difficult to attract a big name. [Deadline]