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.

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

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

COLUMBUS, Ohio — The Ohio State football team is losing a ton on defense, including the man in charge of coordinating it.

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Knowles, a Philadelphia native with strong ties to the Northeast, transformed the Buckeyes' defense during an impressive three-year stint. Ohio State ranked top three in total defense each of the past two seasons and led the nation by holding opponents to 254.6 yards per game and 4.2 yards per play during a historic campaign.

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.

SOUTH BEND, Ind. (WNDU) - A report by Pete Thamel of ESPN says Notre Dame has hired Chris Ash as its new defensive coordinator to replace Al Golden. Golden did a fantastic job as Notre Dame’s defensive coordinator the past three years, but he recently announced that he had accepted the defensive coordinator position with the Cincinnati Bengals.

Joey Kaufman of The Columbus Dispatch has reported that a member of Ohio State head coach Ryan Day's staff is currently on paid administrative leave amid unspecified complaints lodged against him. The report does not provide details regarding the nature of the allegations but does confirm that the office managing the complaints is responsible for handling issues related to harassment,

Ohio State football has revealed that the school’s Office of Institutional Equity is investigating a quality control coach. A letter sent to ESPN from the university’s HR department revealed that Joe Lyberger was informed through a letter from the school that he was being placed on administrative on December 27,

Ohio State’s national title celebration was missing a notable face on Sunday, as Buckeye Nation shortly learned that defensive coordinator Jim Knowles was leaving Columbus to take the same position at Penn State.