The standout junior shot 37.8% from three in 2024-25.
Both teams agreed to postpone the game.
The true freshman played in 29 games for Penn State.
Mahaffey has spent three years in the Big Ten, one of which at Penn State.
The Philadelphia native enters the portal after one season at La Salle where he averaged 7.7 points and 5.8 rebounds.
Goodman was the Nittany Lions' top recruit in the class of 2024.