Perhaps the biggest coaching splash of the college football offseason, acclaimed defensive coordinator Jim Knowles left Ohio State for Big Ten rival Penn State after securing a national championship.

Right away, Ohio State lost both of its coordinators. Chip Kelly left his offensive coordinator role with the Buckeyes to become the new offensive coordinator of the Las Vegas Raiders. Jim Knowles, the team's defensive coordinator, left for the same position at Big Ten opponent Penn State.

In a recent interview with ESPN, Jim Knowles detailed contract disputes that led to his departure from Ohio State football to Penn State.