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.
The transfer portal allows players to explore a move away without asking for their coaching staff's permission.
Lamont Wade, Brandon Polk, and Zech McPhearson all entered their names into the NCAA's transfer portal.
Two goals from Chase Berger weren't enough as the Nittany Lions fell to 13-7-2 on the season and settled for a split against the Spartans.