"Who will not go for a Kaushik Ganguly project? I had refused several offers in the past one year and was waiting for the right role, something more exciting, more interesting," Koel told PTI.
"I remember we had worked in 'Jackpot' in 2013 and I had been yearning to work with Kaushik da again in all these years. But I knew he was waiting for the right script," Koel said.
Besides commercial Bengali potboilers, Koel has starred in off-beat films like "Hemlock Society" and "Char".
"The character portrayed by me is nothing close to who I am and that makes it all the more challenging."
More From This Section
In the last few years, Koel has delivered a string of hits like "Rangbaaz" (2014), "Herogiri" (2015) and "Besh Korechhi Prem Korechhi" (2015) but did not have any release last year.
"My hunger for different kind of films, to accept challenges has gone up over the years and I have to be choosy," Koel said.
Kaushik, whose "Bisorjon" is still running to packed houses, said "Chhaya O Chhobi" is made in the 'film within film' format.
Abir Chatterjee plays the male lead in the film.
"While the audience will see another unexplored side of Abir after 'Bisorjon', Koel's character has been written keeping her traits in mind. Koel is a serious and intelligent actor," Kaushik said.
The film also stars Kaushik's wife and actor-director, Churni Ganguly.