Vilbert also missed most of the 2022 season for an undisclosed reason.
The Nittany Lions will host an open practice from 7 to 9 p.m. on Saturday, August 12, at the Lasch Practice Fields.
Oregon and Washington will become the Big Ten's 17th and 18th teams.
Johnson hauled in 20 receptions for 328 yards and four touchdowns during the 2022 season.
Chop Robinson, Abdul Carter, Kalen King, and Olu Fashanu each received nominations for a slew of awards within college football.
The award honors the nation's top college football player.