The sheer number of Penn State players potentially transferring will hurt the team's depth, but still shouldn't affect too much on the field.
The Nittany Lions will need to be aggressive on the graduate transfer market in order to reach the 85-scholarship limit.
Friberg passed for 2,293 yards and 14 touchdowns as he led the Little Lions to a 12-2 record last season.
Dalton and Gellerstedt joined five of their teammates in the transfer portal on Tuesday.
"I feel that in order to keep my mental in check and reach my full potential as a person and as a player I need to explore other options."
Barkley became the second player in New York Giants history to win the award after his 2,000-yard debut season in the NFL.