"If someone puts a camera like in the Bigg Boss house, you will see me work, come home and sleep. So yes, if someone wants to make a film then I won't mind but I don't think the film will work or it will have any message to give," he added.
The Sanjay Dutt biopic is directed by Hirani.
Asked to comment on showcasing six phases of Sanjay's life and how much it has been fictionalised, Hirani said: "It is not possible to show a 55-year-old journey in two- or two-and-a-half-hours. We had to let go of certain parts."
'Sanju' POSTER & TEASER: Ranbir Kapoor NAILS IT as Sanjay Dutt!
Adding to Hirani's comment, Chopra said: "We didn't want any controversial stuff in the film. What we have done is... presented it with a message. Once the message is clear, the whole film revolves around it."
Ranbir was asked, out of the six chapters of Sanjay's life, which one was difficult to portray.
"The difficult one which I did not expect was the young Sanju because there were a lot of facets that we had to show. First, the drugs then coming out of it, then his mother's death and the most fun was Munna Bhai phase. I enjoyed doing it," he said.
"Sanju" also stars Anushka Sharma, Paresh Rawal, Sonam Kapoor, Dia Mirza and Tabu.