The 68-year-old revealed on his Big Adda blog that Johar is keen to direct a sequel to the 2001 family drama, Indian Express reports.
Bachchan posted: "Karan Johar and we talk of cinema and other lighter moments. His visit to Goa and the sudden impulse to do a sequel to Kabhi Khushi Kabhie Gham, for he felt that all the relevant characters were still around and 'how'."
The Dharma Productions film also features leading Bollywood stars including Shah Rukh Khan and Hrithik Roshan as brothers, alongside Kajol and Kareena Kapoor.
The veteran actor detailed how the plot to the film has developed, nine years since the original.
"It would be a story on the growth of the brothers and the problems that arise because of their independent understanding and working of the business empire of the father, a split within them and so on," said Bachchan.
