Seems like Ranbir Kapoor's film based on late veteran singer/actor Kishore Kumar will need to wait for a while. It is heard that the film which is to be directed by Anurag Basu, will not go on floors until a few details are clarified with the veteran star's family.

Late Kishoreda's family has certain reservations regarding the script of the film and until that is taken care of by the director, they decided not to jump into the project.

In the mean time, it is heard that the duo are working on another biopic which is based on world renowned mathematician Anand Kumar who is from Bihar. Anurag has been finalizing this project for three years and now it looks like it's finally going to make way.

After 'Barfi's success, we're sure the duo will come up with yet another super-duper film.