The sixty-four-year-old-Rishi took to Twitter to share the news about working with the 'Pink' star by sharing a photo of him.
He captioned the snap, "Always a pleasure and an honour to work with him. Started reading the script with the team. For further details ,stay tuned!!!"
The details of the project are yet to be revealed.
Currently, Amitabh Bachchan is busy in promotions of his upcoming movie 'Sarkar 3', directed by Ram Gopal Varma, which is scheduled to be released on May 12