Jim Knowles made college football history over the weekend, becoming the highest paid defensive coordinator ever when he jumped from Ohio State to Penn State for a salary that will reportedly top $3 million per year.

As Ryan Day looks to hire his fourth defensive coordinator in seven seasons, here are potential candidates to replace Jim Knowles.

Ohio State defensive coordinator Jim Knowles left the Buckeyes program in a surprising turn of events, accepting the same job with the Penn State Nittany Lions

The Irish, fresh off losing a national title game to the Buckeyes, reportedly hired defensive coordinator Chris Ash on Wednesday. The deal is expected to be finalized shortly.

The media could not be loaded, either because the server or network failed or because the format is not supported.

Penn State has made a massive splash by hiring Ohio State defensive coordinator Jim Knowles to take the same job with the Nittany Lions. He replaces Tom Allen, who left PSU to become Clemson’s defensive coordinator. Here are three thoughts on what Penn State hiring Knowles means moving forward.

COLUMBUS, Ohio — Ohio State football’s national title defense will come with a new face running the defense. The Buckeyes are losing defensive coordinator Jim Knowles. After three seasons in Columbus, he’s leaving to serve as Penn State’s defensive coordinator.

Should Ohio State lure Hampton away from Eugene, it would be the second year in a row that the Buckeyes took a coach from Oregon. Last year, after running backs coach Tony Olford left Columbus to coach RBs for the Michigan Wolverines, the Buckeyes hired Ducks running backs coach Carlos Locklyn.