During the production of 'Love Aaj Kal', Imtiaz approached Rakesh Roshan regarding the script of the plot line. At the moment, Papa Roshan, who was suppose to be the co-producer of the flick, agreed to the script verbally however when it came down to actual pen and paper, things were different. After considering the script a second time, Roshan requested some changes which was supported by son, Hrithik Roshan.
However, Imtiaz did not like the changes being requested. So the ace director decided to move on and cast the heartthrob, Ranbir Kapoor instead.