The hiring marks Ciarrocca's third different Big Ten offensive coordinator job in four years.
The linebacker totaled 72 tackles, 14 for a loss, and 13 sacks during the 2022 season.
Mulbah will enter the transfer portal will three years of eligibility remaining.
The Nittany Lions earned high grades across the board following their Rose Bowl victory over the Utes.
Our photographers made the trip to Pasadena to capture the Rose Bowl in all of its glory.
From an homage to Franco Harris to Sean Clifford's final goodbye, the 2023 Rose Bowl featured a little bit of everything.