There were reports that the actor-director duo was planning to collaborate for a third movie after having worked on films, such as "Rockstar" and "Tamasha", which received mixed response at the box office.
However, Imtiaz says there is nothing yet decided.
"I hope I do it (work with Ranbir) at some point of a time. As I have not finalised what I will do next, I am still trying to figure out things. I am working on a story. And before the story is done, contrary to the popular belief the hero is not selected," Imtiaz told PTI.
"I think a lot of questions have been asked (about response to the film)...The result was a little different from what everybody had expected, so that was there. So happy and (not happy) nothing like that, life goes on, you have to let the film go and start with another. And that is what I am doing right now.
"Everybody is entitled to their own opinion. I will also have an opinion but I feel the opinion about the film, especially for the one who makes it, comes after a long time and not so soon.