The 2002 British comedy-drama was the story of Indians living in London and Sharma says just like Chadha's film, his next is a quirky comedy about how NRIs cope in foreign land.
"It is a quirky romantic comedy about how Indians define India outside the country. It is also a take on the Australian phrase of UnAustralian. It is like Gurinder Chadha's 'Bend It Like Beckham' from Australia," Sharma told PTI.
The Sydney-based film stars former Australian cricketer Brett Lee and Tannishtha Chatterjee and will go on floors next month.
Sharma, who is also an actor, producer and author, said he decided to zero down on Lee and Chatterjee for 'UnIndian' as he felt the duo is the perfect combination of art and commerce.
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"Brett has a huge following in India. He has already charmed the Indian audience. As for Tannishtha, we wanted someone with an international profile, someone who was willing to take some risks.
Sharma, as head of Films and Casting Temple, has produced the Australian shoots for Bollywood films like Farhan Akhtar's 'Dil Chahta Hai', Akshay Kumar-starrer 'Heyy Babyy' and 'Love Story 2050'.
When asked why he did not approach any Bollywood actor for his movie, Sharma said he did not feel anyone would fit in the role but added that he is open to working with stars in his future ventures.