There were reports the actor would play a member of Dhoni's team in the film, which stars Sushant Singh Rajput in the lead role.
"I am not doing Dhoni's biopic. In fact, I was never offered the film. These were just rumours and I don't know how they surfaced. But there is no truth in them," the actor told PTI.
Gautam, 27, is currently shooting for "Azhar", an upcoming biopic on the life of former Indian cricketer, Mohammad Azharuddin.
"I have shot some scenes but I am not allowed to talk about my role and the film. Ekta ma'am offered me a three-film deal and who would say no to her. I am very happy to have got a chance to work with her again," he said.
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Gautam started his journey on TV with Ekta's TV show "Kasamh Se" and later appeared in Balaji Telefilms's "Tujh Sang Preet Lagayi Sajana" and "Pyaar Kii Yeh Ek Kahaani".
When asked if the reality series helped him in furthering his showbiz career, the actor said, "I got a lot of adulation on 'Bigg Boss' and even after that. I feel grateful. 'Bigg Boss' has given me a lot. But it also makes me conscious of taking the right steps in my career because I don't want to let my fans down."
Gautam will be next seen as a guest judge on "India's Next Top Model". The show is being judged by Lisa Haydon, Anusha Dhandekar and Dabboo Ratnani.
"These aspiring models come from all parrts of India wqith various backgfrounds and persoanlities all make the show interesting. There is a lot of drama along th way and we get to see each if these girls transform on TV.