Rajkumar Santoshi says he can't sign both Salman Khan and Aamir Khan for his comedy film 'Andaz Apna Apna 2' unless the two superstars agree to also produce it together. "Although they both (Salman and Aamir) keep saying that they will love to do the film, so once I am ready with the script, I will discuss with them. I will be able to cast them in the sequel if they both will produce the film as it would not be possible to sign the two big stars to do the film," he said.