The safety recorded 57 tackles and an interception in a breakout senior season.
Clark played quarterback, safety, and linebacker his senior year of high school.
Some fans couldn't help but question Ciarrocca's departure following a season plagued by obstacles and injuries.
In his career, Yurcich's offenses have averaged 6.49 yards per play, which ranks first among offensive coordinators since 2013.
Thirteen Nittany Lions enter the postseason on active NFL rosters.
"I'm actually excited to see what comes next for myself."