KARACHI: Director Milan Luthria wants Sonakshi Sinha and Imran Khan to develop chemistry for their roles in “Once Upon a Time in Mumbaai” sequel.

According to media sources, now both the actors are trying their best to socialize with each other as much as possible.

Sources added that Imran has planned to invite Sonakshi for dinner at his place.

Luthria also wants Khan to familiarize himself with the local gangsters from the city so that the movie looks as real as possible.