New Delhi, May 5 (ANI): Playing Sanjay Dutt is not going to be an easy task and probably realising the same, Ranbir Kapoor has begun making efforts to know how it would feel to be like Sanju Baba. If sources are to be believed, Ranbir, who has been cast for Sanjay Dutt’s biopic, is spending time with the kids of the ‘Munna Bhai’ actor. The news was confirmed by Sanjay’s wife Manyata Dutt who took to her Instagram account and shared a snap of the 33-year-old actor with her kids. Directed by Raj Kumar Hirani, the biopic on Sanjay Dutt is scheduled to hit the screens around Christmas of 2017.