Malloe coached alongside new defensive coordinator D'Anton Lynn at UCLA in 2023.
Brown has not registered a stat in two seasons with the Nittany Lions.
Williams was the No. 1 player in Pennsylvania in the class of 2023.
Exinor did not register a stat in his true freshman season.
Grunkemeyer has been the Nittany Lions starter since Drew Allar went down with a season ending injury.
Penn State ranked second in the Big Ten conference with 54 receptions of 20 yards or more in 2024, but only 27 came from wide receivers.