The "Sultan" star and Dutt are good friends and both have often spoken good things about each other on several occasions.
Director Rajkumar Hirani is making a biopic on Sanjay Dutt with Ranbir Kapoor essaying Dutt's character.
"..... It will not be complete without me being part of it," Salman said here.
But since the time Dutt has come out of jail there have been reports that all is not well between the "Khalnayak" star and the Dabangg Khan.