That Rajkumar Hirani is directing Sanjay Dutt?s biopic is know to all. In fact, the talented filmmaker has even approached Ranbir Kapoor for Dutt?s role and reportedly Rishi Kapoor?s ladla beta has given his nod to the project. But did you know that Manyata Dutt?s hubby dearest is co-writing the biopic? Apparently, the PK actor will pen down some personal anecdotes which many aren?t aware of. So how did Sanjay Dutt got down to writing? Well, blame his filmmakers friends as they thought he could do justice to the story than anyone else.