James Franklin and new Penn State defensive coordinator Jim Knowles released statements after Knowles was hired on Monday.

Jim Knowles replaces Tom Allen, who left to take the same job with Clemson after Penn State fell to Notre Dame in the College Football Playoff semifinals.

Cincinnati Bengals head coach Zac Taylor introduces new defensive coordinator Al Golden at Paycor Stadium. Golden was hired last week after the Bengals fired former defensive coordinator Lou Anarumo. Anarumo is now the defensive coordinator for the Indianapolis Colts.

Notre Dame football offensive line coach Joe Rudolph worked with Chris Ash at Wisconsin for two seasons, coaching tight ends.

After interviewing a handful of candidates, the Atlanta Falcons hired Jeff Ulbrich for their defensive coordinator vacancy last week. The team held a press conference in Flowery Branch to introduce Ulbrich on Monday morning.

Penn State’s previous defensive coordinator Tom Allen unexpectedly left for Clemson on Jan. 13. The ensuing 14-day stretch as Franklin searched for a replacement took plenty of turns, but the Nittany Lions' head man has always admired Knowles from afar and hoped to bring the Pennsylvania native back to the state.

The Lions are promoting linebackers coach Kelvin Sheppard to defensive coordinator. Here are some things to know about Sheppard.

Bryant Haines was the first assistant in Indiana football history to make more than $1 million a year, and he delivered results that drew interest from CFP teams.

The New England Patriots officially announced the hiring of Mike Vrabel just two weeks ago, and since then, they've been adding new coaches to his staff left and right. On Monday, MassLive's Mark Daniels reported that the Patriots are hiring Doug Marrone and Milton Patterson to coach under Vrabel.

The Chicago Bears are hiring Dennis Allen as their defensive coordinator, according to NFL Network's Ian Rapoport, under new head coach Ben Johnson.

The Chicago Bears are hiring former New Orleans Saints head coach Dennis Allen as defensive coordinator under first-year HC Ben Johnson: