“The vacancy created by Lachlan Murdoch’s departure could set the stage for a power struggle between” Roger Ailes and COO Peter Chernin,” today’s Wall Street Journal speculates. The highlights:

> “Ailes is interested in bolstering ties between the cable channel and the station group. In recent months, the two units have ramped up their talks about collaborating on programming, says a person familiar with the situation. Fox News Channel already produces “Fox News Sunday,” which airs on Fox stations.”

> “Now there is talk inside News Corp. about a morning show — a hybrid of news and entertainment — that would air on the Fox-owned stations and perhaps even go national on the network. The 9 a.m. show might use Fox News facilities in New York, according to people familiar with the discussions, although that doesn’t mean Fox News would produce it.”