If the buzz is to be believed, then Jimmy plays the role of SRK's brother in the film. The role was earlier supposed to be played by Jimmy's co-star from A Wednesday, Aamir Bashir. It may be recalled that Jimmy had starred with Shah Rukh way back in 2000 in Yash Raj Films' Mohabbatein.
Jimmy surely must be hoping that this time too, his pairing with SRK manages to strike gold at the B.O.