The 46-year-old director took to his Twitter account to announce the title of the film, which might also see actors Vidya Balan and Naseeruddin Shah in prominent roles.
"The script that I'm writing for sir (Amitabh Bachchan) is called BADLA, which, if I write well, will have sir and Naseer ji and Vidya balan. All depends on script," posted Ghosh.
He also denied the rumours that his next is a sequel to his his suspense thriller "Kahaani".
"and finally.. BADLA is not the sequel to Kahaani. Thats another story altogether," he added.