Actor Ayushmann Khurrana, who's currently shooting for Hitesh Kewalya-directed film 'Shubh Mangal Zyada Saavdhan', has reportedly signed a film under Karan Johar's banner Dharma Productions. The untitled film will reportedly be a romantic comedy. Ayushmann had revealed in 2015 that Dharma Productions rejected him after he approached them for an opportunity saying, "We only work with stars."