Sai Pallavi not a part of Mani Ratnam - Karthi film?

If sources are to be believed, Sai Pallavi will not be a part of Mani Ratnam's next film. "It is true that she signed this project earlier but now as the character sketch demands an older and matured girl, Sai Pallavi wouldn’t be playing the lead," says a source close to the actress. There are also rumours that Bollywood fame Aditi Rao has been roped in to replace Sai Pallavi. Let's wait for an official confirmation.
http://www.moviecrow.com/News/11951/aditi-rao-to-replace-sai-pallavi-in-mani-ratnams-next