Contactmusic.com reports that the actor has teamed up with John Krasinski to write the script for the drama.
The movie tells the story of a salesman (Damon), who arrives in a small town and has his entire life called into question.
According to reports, The Office star Krasinski came up with the idea for the plot and developed the idea with author Dave Eggers. He then pitched the idea to Damon and they began working on the script. Then they took the project to Warner Bros.