Keys had originally been committed to North Carolina since August.
Pat Kraft, James Franklin, and plenty more will speak at Penn State football's bowl media day on Friday.
Clifford joins Pitt defensive lineman Deslin Alexandre and Oregon offensive lineman Alex Forsyth as finalists for the award, which annually recognizes a player who shows "exemplary leadership both on and off the field."
Hamilton missed the entire 2021 season with an ACL injury.
As the higher-ranked team, Utah will don its red uniforms.
James Franklin's top-rated recruit of the Class of 2023 earned the group's first five-star rating.