Naomi Watts and Girls' actor Adam Driver are in talks to join Noah Baumbach's comedy While We're Young.
The Oscar-nominated Impossible star is rumoured to be playing the wife of Ben Stiller's character, "an uptight documentary film-maker", according to The Hollywood Reporter.
Adam - best recognised as Adam Sackler, the on-off boyfriend of Lena Dunham's alter-ego Hannah Horvath - would be one half of a "free-spirited younger couple".
The story, which has been written by Noah, focuses on Ben and Naomi's characters, who find their lives loosened a bit after they strike up a friendship with the younger pair.
Production is expected to begin in New York in the autumn.
Naomi, who received an Oscar nod for her performance in The Impossible, will next star as Diana, Princess of Wales, in Oliver Hirschbiegel's biopic Diana.
Adam will next star in the Coen Brothers' musical biopic Inside Llewyn Davis with Carey Mulligan and Justin Timberlake, and Australian drama Tracks alongside Mia Wasikowska.