Aamir Khan fans can now expect their favourite star taking up a new challenge as rumours say that he will be seen playing the iconic screen character of 'Munna Bhai' in the upcoming films of the franchise.

Khan, one of Bollywood's most critically acclaimed actors, will replace an ageing Sanjay Dutt who has played the character in the first two films of the much-loved series, media reports said.

But it will not only be Aamir who will be seen delivering the teasing dialogues in lovable gunman's style that has become a cult, as viewers will also reportedly see a new Circuit, Munna Bhai's trusted sidekick, in the upcoming movie of the series.

The character Munna Bhai's assistant named 'Circuit', which was played by actor Arshad Warsi in the last two films of the series will be replaced by actor Sharman Joshi, media reports said.

It is speculated that director Rajkumar Hirani had decided to replace Sanjay Dutt and Arshad Warsi while shooting for the film '3 Idiots' that featured both Aamir Khan and Sharman Joshi in the lead roles.

Both Aamir and Sharman had entertained the fans in the hugely popular film '3 Idiots' and it will be interesting to see how they perform as the marked screen pair of Munna and Circuit.

Khan will also be seen stunning his fans in the third film of the adrenaline rushing 'Dhoom 3'.

Sanjay Dutt and Arshad Warshi featured in the first two films of the Munnabhai franchise titled 'Munna Bhai MBBS' and 'Lage Raho Munna Bhai'. The films were directed by Rajkumar Hirani and produced by Vidhu Vinod Chopra.

The next film of the Munnabhai series is tentatively titled 'Munna Bhai Chale Amerika'.