It appears that Knowles didn't take long to shuck his scarlet red colors and put on the blue and white at Penn State, taking aim at the conference leaders. It's a huge get for Penn State, who already had one of the most productive defenses in the nation last year, and now adds arguably the top defensive coordinator in the sport to the mix in 2025.

However, Knowles wasn’t in attendance. About an hour later, reports surfaced that Knowles is leaving Ohio State to serve as Penn State’s next defensive coordinator. The move leaves Day searching for a replacement. Here’s who he might consider as he enters his seventh season as the Buckeyes' head coach.

Penn State hired Ohio State defensive coordinator Jim Knowles, a Philadelphia native and St. Joe's Prep graduate.