Katie Couric has sought advice from power lawyers including Allen Grubman after her executive producer Jeff Zucker’s name repeatedly came up as a candidate to head up CNN, sources exclusively tell Page Six. Zucker, former head of NBC Universal, has been in the frame to take up the position as head of CNN Worldwide after Jim Walton announced he was stepping down. Zucker owns a large portion of Couric’s new daytime show, creating huge complications should he leave. However, last week Mark Shapiro, formerly Dick Clark Productions chief executive, listed as a CNN front-runner. A source said, “When Jeff’s name was first touted, Katie met with Grubman to look over her contract. This happened about three months ago. She wanted a second opinion on how to proceed if Jeff leaves.” But sources said Couric didn’t end up hiring Grubman and sought advice from other lawyers. Despite rumors of friction with Zucker over the possibility of him leaving so soon after the debut of her show, the source argued, “There is no bad blood. Katie understands he wants a big job and will eventually leave. This isn’t about suing him, this is about her getting the best overall deal for herself, and if in the event he does leave, she has proper counsel ready.” Couric’s rep said, “Syndication is complicated, so I’m sure Katie has consulted lawyers. Katie and Jeff are excited about the show’s success and are having a great time working together.” Zucker didn’t get back to us.