Mumbai, (PTI) Ranbir Kapoor is excited to soon start work on Bollywood star Sanjay Dutt's biopic, but says he finds himself undeserving of stepping into the shoes of the accomplished actor and enacting him on screen.

The biopic will be directed by Rajkumar Hirani and features Ranbir playing the "Munna Bhai" star.

"I am starting the shoot next month. It is a very difficult film. To represent Sanjay Dutt and work with Raju Hirani...I don't even think I deserve this film. But, I am looking forward to working on it," the 34-year-old actor told reporters here.

While the film has a lot of time before it releases on the big screen, Ranbir has another movie coming up sooner - "Jagga Jasoos", which has been in the making for close to last three years.

The film will release in April next year and its promo has been out today.

Sharing his excitement about the movie, which also Katrina Kaif, Ranbir said, "Our dream of two-and-half years is coming true now. We are getting great response for the poster.

Anurag Basu, Pritam, Katrina and I have made this film with our heart and worked really hard on it. It is a family film and I wish people will like it. I also wish the media presents in a positive way."

The actor interacted with the media here last night at the red carpet of Sansui Colors Stardust Awards, where he was nominated for his performance in "Ae Dil Hai Mushkil". The actor, however, believes he doesn't deserve to win any award this season.

"I don't think I deserve to win this year. There have been superior performances than mine, Amitji's ('Pink'), Salman Khan's ('Sultan'), Sushant's (Singh Rajput, 'MS Dhoni: The Untold Story'). They have given some wonderful performances and are far more deserving than I am," he said.