The Harbaugh-to-Michigan rumors intensified on Sunday. But it's not the Harbaugh everyone is thinking about.

While reporting that Jim Harbaugh as expressed to the University of Michigan athletic department that his preference is to remain in the NFL, NFL.com reported Sunday that the Wolverines football program is holding out hope that it can lure Baltimore Ravens coach John Harbaugh to Ann Arbor.

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NFL.com cited a story in September stemming from a tweet by NFL Media analyst Gil Brant that revealed the Wolverines would be taking a look at John Harbaugh if they were to fire Brady Hoke, which happened last week.

Brandt talked about John's ties to Ann Arbor in that he graduated from high school there. NFL Media reporter Ian Rappaport added that high-ranking Michigan officials might actually prefer John over Jim because John is viewed as a long-term option.

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That thought was in contrast with Michigan reaching out to Jim Harbaugh, as the latest NFL.com report indicated.

"NFL Media Insider Ian Rapoport reported on NFL GameDay Morning that university representatives reached out to (Jim) Harbaugh and "left convinced that he wants to be an NFL coach next year, not a college coach."

John Harbaugh beat his brother in Super Bowl XLVII when the Baltimore Ravens defeated the San Francisco 49ers 34-31. So while Jim Harbaugh, which NFL.com noted as ultra-competitive, has a desire to remain in the NFL - perhaps with the Oakland Raiders, John Harbaugh already has a Super Bowl ring.

He also could have had an incident that had an alienating effect on him from the Ravens.

A report surfaced in September that Harbaugh wanted the Ravens to release running back Ray Race after the video of Rice dragging then fiancée Janay Palmer out of an elevator at an Atlantic City casino in February.

Four sources told ESPN's Outside the Lines that Harbaugh wanted Rice gone but that owner Steve Bisciotti and team president Dick Cass overruled him.

The Ravens claimed that Outside the Lines reported false or misleading information.