Come On Pappu will be the directorial debut for David Dhawan's son Rohit Dhawan. Sources close to the director say that the female lead's role was open and had Chandni Chowk To China done well Deepika would have surely bagged the role. But since the pairing didn't click Akshay didn't want to do another movie with Deepika instead chose her biggest rival Sonam Kapoor.
Deepika and Sonam have had mutual dislike for each other since the time their debut movies Om Shanti Om and Saawariya clashed at the Box Office. Ranbir Kapoor had dated Sonam after his first breakup with Deepika. Later the Kapoor scion went back into the arms of the OSO actress. Loosing the role to Sonam will hurt Deepika more than loosing a role in the movie.