The 'I Don't Know How She Does It' actress - who has played lead character Carrie Bradshaw in six TV series and two film instalments of the romantic comedy - believes a third project will get made, but when it will get released is what she doesn't know.
She said: "I know what the story is. It's a small story, but I think it should be told. The question is, what's the right time to tell it?"
He recently confessed the franchise was "dead" because of bad reviews.
He said: "It's over. The franchise is dead. The press killed it. Your magazine f**king killed it. New York Magazine. It's like all the critics got together and said, 'This franchise must die.'
"They all had the exact same review. It's like they didn't see the movie."