The latest name to surface in the hunt for Lucie Salhany’s successor as UPN chief is Dean Valentine, president of Walt Disney Television and Walt Disney Television Animation. Buzz was swirling around town Tuesday that Valentine is in talks with UPN partners Viacom and United Television/Chris Craft Industries, but execs close to the netlet continued to insist that no appointment is imminent. Salhany is set to depart her post as prexy and CEO in mid-September. UPN, Paramount and Chris Craft officials as well as Valentine declined to comment. Before joining Disney as director of TV development in 1988, Valentine served as director of comedy programming for NBC Entertainment.