Actor Jackky Bhagnani stepped into Irffan Khan’s shoes for Welcome To Karachi after the latter walked out of the film due to his other commitments. But the younger actor does not feel he can ever ‘replace’ a ‘supreme actor’ like Irrfan.“I feel Irrfan sir is a supreme actor. I can never replace him. I’m a big fan of him,” Jackky said here during the trailer launch of Welcome To Karachi.Directed by Ashish R. Mohan, “Welcome To Karachi” also features Arshad Warsi and Lauren Gottlieb. The film is slated for May 21 release. Once Jackky became a part of the film, a few scenes were changed.