Hot Tub follow-up minus Cusack?

Hot Tub Time Machine could be getting a sequel.

Heat Vision reports that MGM is in early discussions about a follow-up to the 2010 comedy but John Cusack, who starred in the original, is not involved at this point.

His co-stars Rob Corddry, Craig Robinson and Clark Duke are said to be in "exploratory talks" about reprising their roles for the follow-up.

Meanwhile Steve Pink, who directed the first film, is apparently considering getting behind the camera for the sequel.

Hot Tub Time Machine - which also stars National Lampoon funnyman Chevy Chase - follows four men who travel back in time via a hot tub to their teens in the 1980s.