Tom Allen became Dabo Swinney's fourth defensive coordinator hire. Allen explained Wednesday why he left Penn State after one season.

Clemson has hired Penn State defensive coordinator Tom Allen for the same role with the Tigers. The move was finalized Tuesday by the school’s Board of Trustees Compensation Committee.

Clemson officially introduced Tom Allen as the new defensive coordinator after he left Penn State for the same role with Dabo Swinney's program. In what some have call

Dabo Swinney hopes to fill Clemson's defensive coordinator job this month. Here's why Swinney will likely target an experienced, external coach.

In a press release, Dabo Swinney commented on why former Clemson football defensive coordinator Wes Goodwin will not return to his coaching staff.