The duo are in final talks to star in the film being directed by Jennifer Elster, Daily Variety reported Wednesday.
The story by Wendy Ross tells what happens to a couple after a hit-and-run accident.
Shooting is scheduled to start in May.
McAvoy, of "The Chronicles of Narnia: The Lion, the Witch and the Wardrobe," stars in the upcoming "The Last King of Scotland."
Martin Bashir resigns from MSNBC over Sarah Palin comments
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