Billy Bob Thornton is set to star in the boxing drama Pound for Pound, according to The Hollywood Reporter. The project is based on a novel by F.X. Toole, the author of the short-story collection behind Clint Eastwood’s Oscar-winning Million Dollar Baby.Thornton will play a depressed, retired boxer whose life intersects with a young Latino fighter (a role that is still being cast). Ron Shelton (Bull Durham) will write and direct. The production is expected to being filming early next year.