The duo have collaborated for the first time on the upcoming film "Zero" and the director said Shah Rukh still has a lot to offer as an actor.
"I think he is a very gutsy actor from day one, he has always taken up challenges. And that is the reason I am with him. As a director, you should be prepared to take him on a journey and explore such a superstar.
The director is impressed by Shah Rukh's performance in the movie, which also features Anushka Sharma and Katrina Kaif.
"This is a blessing that I got to work on a film like this with him. I am happy. He is an intelligent person to play this role. Who else can do this and get into the skin of a character like this? It is tough to take away those two feet, flamboyance, grace and still say 'let's romance'," he added.
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"In a decade's time, he will do so much as an actor but as a visionary he will take the Indian cinema ahead. He doesn't think like just as an actor. Do expect a lot of newer things as an actor. He has got great plans.
"And with this man, if I feel stressed, (it is) not done. There is nervousness and I enjoy that. This is India's biggest VFX film but you will hardly feel that. It will look like any other normal film and yet new, so that is what the VFX is all about."
"It is a part of the story and it has not been done to increase or give the film a scale. The cameo parts are not done for the sake of it, they have been used (well).
"There is a reason for them to be a part of the film. They (the appearances) are not structured. It was a delight to have all of them in the film," he said.