“In the NFL, though, Carroll has had the upper hand over Harbaugh (6-5), especially in their most recent battles,” Moton wrote. “Though the Chargers are coming off a year in which they clinched a playoff berth with an 11-6 record, Harbaugh probably isn't thrilled to see Carroll back in his conference and division.”

Carroll, 73, is set to return to the NFL sideline as a head coach for the first time since the conclusion of the 2023 regular season.

Carroll has one Super Bowl title as a head coach from the 2013 season, and one of his new bosses helped prevent him from getting a second. Tom Brady, a Raiders minority owner, and the Patriots defeated Carroll's Seahawks in the unforgettable Super Bowl XLIX, which culminated with Malcolm Butler's goal-line interception.