SIREN: Chuck Todd, a political obsessive and rabid sports fan, is the likely successor to David Gregory as moderator of “Meet the Press,” with the change expected to be announced in coming weeks, according to top political sources. The move is an effort by NBC News President Deborah Turness to restore passion and insider cred to a network treasure that has been adrift since the death in 2008 of the irreplaceable Tim Russert. Although Todd is not a classic television performer guaranteed to wow focus groups, his NBC bosses have been impressed by his love of the game, which brings with it authenticity, sources, and a loyal following among newsmakers and political junkies.

Gregory’s next move is unknown, but he’s unlikely to remain at the network – a stunning turn for a quick-rising star with a broadcasting polish and on-air versatility that once made him a natural candidate to be a future “Today” show host. It’s unclear whether Gregory or Todd knows about the big move, likely to be in place before year’s end.

The sources caution that nothing is definite or decided.