Model and actor Sahil Shroff, who was set to join forthcoming season of "Khatron ke Khiladi", has reportedly pulled out of the stunt based reality show.According to a source, the model was compelled to back out because of an injury."Yes, he has opted out of the show because of his injury. However, the type of injury is not known to us," said a source.The fifth season of the show, that aired on channel Colors, was hosted by film director Rohit Shetty. As the name suggests, the show tests the limits of the stars and threw some difficult tasks at the participants. Sahil Shroff was seen in movies like "Shaadi Ke Side Effects" and "Don 2"