Literary lothario Salman Rushdie is still waiting to see if Michelle Barish will accept his offer to be his fifth wife. In December, impatient Rushdie stepped in with a marriage proposal two days after stunning, flame-haired Barish split up with New York Giants co-owner Steve Tisch. Sources tell us that Rushdie followed up his offer by presenting Michelle — the estranged wife of entrepreneur Chris Barish — with a 7-carat emerald-cut diamond ring. But sources said Michelle, who is still working toward a divorce settlement with Chris (with whom she has daughter Bee), “is still mulling over the offer from Salman.”