Kat chooses SRK over Hrithik

Katrina Kaif would have made a very sexy mutant. Even the Roshans thought so. However, the actress had to turn down Rakesh Roshan's Krissh 3 offer to accommodate Yash Chopra's next venture (untitled, still) in which she stars opposite Shah Rukh Khan.

Both Chopra and Roshan wished to go on floors with their respective films by October 2011.

A source says, "Katrina very much wanted to do Krrish 3. She loved the fact that she would be playing a negative role for the first time in her career.

The mutant's role has several shades which Katrina wanted to toy with."

Unluckily for the actress, her dates were already locked for Yash Chopra's film by the time she was approached for the Hrithik Roshan starrer.The Roshans then approached Chitrangda Singh for the mutant's role.

And she accepted the offer. However, when contacted Roshan said, "I haven't finalised the casting of Krrish 3. I am still working on the script."