The film, set in post-World War Two Paris, is based on author Chris Greenhalgh's 2012 book Seducing Ingrid Bergman, a dramatised account of the stars' real-life romance, which took place while she was still married to Petter Aron Lindstrom.

The project has been in the works for the past two years and Mangold will now help to move the film forward by working with screenwriter Amash Amel to tweak the script.

Casting details and a release date have yet to be revealed.