Schiano out at OSU, Mattison and Hafley in

Schiano out at OSU, Mattison and Hafley in

Mattison had coached a cummulative 18 seasons as a defensive coordinator or co-coordinator prior to spending the past four seasons as the Wolverines defensive line coach.

A 49ers team that hasn't developed a good, young cornerback in decades and that mustered just two interceptions in 2018 is looking for a new defensive backs coach.

Ohio State lost one of its previous co-defensive coordinators, Alex Grinch, to Okahoma over the weekend.

Since, Ohio State made a run at the Columbus native, and he seems to be poised to join Mattison coaching what was briefly his arch-rival.

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Brian Flores is a hot head-coaching candidate, and the New England Patriots don't have an obvious internal replacement for their de facto defensive coordinator if he opts to leave town.

Schiano had agreed in principle to become the head coach at the University of Tennessee last offseason, but that plan fell through after fan backlash. The Buckeyes' best defender, DE Nick Bosa, suffered a season-ending injury in the third game of the season. Harbaugh retained Mattison from Brady Hoke's staff. Mattison had been Hoke's defensive coordinator.

Ohio State also announced that defensive line coach Larry Johnson will continue coaching the defensive line, but has also been promoted to associate head coach. His defensive lines at MI were some of the best in the country the last few years, and he'll look to transform an Ohio State unit that has plenty of talent but didn't play up to it for most of the season.

Schiano had coordinated defenses at Ohio State since 2016 after a three years away from college and the NFL.