(Undated) -- Jim Harbaugh could be returning to coach in the NFL. The Athletic reports Harbaugh "might be tempted" to take an NFL coaching job after leading Michigan to the College Football Playoff Semifinals this season. A possible landing spot could be the Las Vegas Raiders, who are looking to fill a vacancy after Jon Gruden resigned in October. Harbaugh coached the 49ers from 2011-to-2014 and led San Francisco to Super Bowl 47.