I look forward to working with this tremendous staff and group of student-athletes and am ready to get to work,” Jim Knowles said in a written statement.

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.

Former Ohio State defensive coordinator said in an address to Penn State players that the Nittany Lions were 'everything' to him growing up