Warner Bros. TV has had some preliminary conversations with Witt-Thomas Prods. president Gary Levine about taking over as executive VP of creative affairs at the studio, sources say. Levine would potentially replace David Janollari, who is expected to ankle soon. Janollari is considering several offers, sources say, including forming his own production company with recently departed Fox executive Bob Greenblatt. Sources say Janollari and Greenblatt are now looking for a studio deal where they can set up shop. Warner Bros. had no comment, and Levine did not return phone calls, but sources say discussions between the two are in the very early stages. Witt-Thomas is owned by Time Warner.