Bollywood and southern actor Kamal Haasan will play the lead in the Tamil remake of `PK`. What isn`t clear is whether he will also direct the film. Raju Hirani`s `PK` Tamil version is yet untitled but will be produced by Gemini Film Circuit, which earlier remade Hirani`s `Munnabhai MBBS` and `3 Idiots` as `Vasool Raja MBBS` and `Nanban`. Haasan is yet to choose the director and the rest of the cast.