Students will submit their requests in late July for the upcoming season.
Oregon last visited Happy Valley in 1964, coming out with a win, 22-14.
Gardner is the ninth entry to the transfer portal from Mike Gambino's team.
King Mack makes three appearances in the official College Football 26 trailer.
The Nittany Lions await the winner of Oregon and Nebraska.
Lum tallied 16 points, with 9 goals and 7 assists in 38 games for the Saints last season.