Bollywood actor Sanjay Dutt, who will be released from Pune’s Yerawada Central Prison on February 25, is planning to produce a film on the life of one of his fellow prison inmate.When Munnabhai heard the story of this particular inmate, it touched him to the core and he immediately decided to make a film on it. The man is behind the bars following a family dispute and a significant part of the film will be of him inside prison.“He is definitely not co-writing this one but will be actively involved with the scripting and production. The film will roll this year itself,“ says a source.After being released, Sanjay Dutt will also start shooting for the third installment of his superhit franchise Munnabhai which will be directed by Rajkumar Hirani.