Stanley Tucci is in negotiations to join the cast of Your Voice in My Head, a film from Harry Potter director David Yates. The film is also set to star Emma Watson.  From Collider:

Watson stars as Forrest, a young girl who attempts suicide after a bad breakup, only to be saved by a terminally ill psychiatrist. Tucci would play the psychiatrist if he signs on. We had previously heard that the psychiatrist role caught the eye of a number of high profile actors, including George Clooney and Tom Hanks, but apparently Yates decided to go with Tucci in the end. Hit the jump for more.

See a full synopsis here.