Matt Damon is to make his directorial movie debut.

The actor has teamed up with John Krasinski to write The Script for the as-yet-untitled drama, which they will both also star in.

The movie tells the story of a salesman (Damon), who arrives in a small town and has his entire life called into question.

'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.

They have now taken it to Warner Bros. and while the studio hasn't yet given it the go-ahead, it is thought it will soon.

Damon has been looking for a directorial project for a while and has also signed up for 'Father Daughter Time: A Tale of Armed Robbery and Eskimo Kisses'. However, it is thought he will helm the Krasinski drama first.

However, he is still concentrating on his acting career and recently revealed he wants to make another 'Bourne' movie.

The actor turned down the chance to star as spy Jason Bourne in a fourth instalment when director Paul Greengrass left the franchise, and despite the series being rebooted with Jeremy Renner in the lead role, he is still hopeful of returning to the character one day.

He said: "I was always fine with them doing another 'Bourne' movie as long as it didn't preclude me and Paul from doing another 'Bourne.'

"From what I understand, it doesn't at all, so that's fine. I really want to do another one with Paul and I'm sure it'll happen some day, but for now they're doing this. I'm keeping hope."