Irrfan Khan has refuted allegations he has snubbed Bollywood director TIGMANSHU DHULIA's latest film. The A Mighty Heart actor insists he "couldn't say no" to Dhulia, who he worked with on 2003's Haasil and 2004's Charas: A Joint Operation, because he believes his appearance in the forthcoming cop movie Shagird will boost his acting credentials. He says, "I haven't said no to Tishu (Tigmanshu). How can I? We've done two films together, and I enjoyed both immensely. "But please understand that mine is only a special appearance in 'Shagird'. There's therefore no question of my opting out because I only want to do leads."