Knowles has succeeded at the highest level and completely remodeled an Ohio State defense that just won the national championship. But a long history of good defense at Penn State means his next steps won't be so clear-cut.

In a new interview, Penn State's defensive coordinator says he's going to build the No. 1 defense with the Nittany Lions.

Penn State made the hiring of new defensive coordinator Jim Knowles official on Monday. Here's what each had to say about the move