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.

Maybe it was mostly about showing him the money, but if Jim Knowles loved working at Ohio State, leaving for Penn State was a funny way of showing it.

Here are three potential options who could fill the Ohio State Buckeyes' defensive coordinator vacancy in 2025.