Filmmaker Rakeysh Omprakash Mehra's much-talked about biopic on Indian athlete Milkha Singh is to start shooting this August, reveals the director.

"The story and screenplay of the film are over. We are in the process of auditioning, since we want a new face for the protagonist's role. By Feb 15, I think we'll decide and then we start shooting in August, " Mehra told.

Mehra's last directorial venture was "Delhi 6", starring Abhishek Bachchan and Sonam Kapoor.