The Penn State "Linebacker U" tradition will carry on in Dallas.
Mills is the second prospect to commit to Penn State's class of 2022 in just five days.
Early indications show Walker as a first-round pick in 2022.
Many former Penn State football stars are set to earn chances at playing time at the next level.
It was a busy weekend for former Penn State football players at the 2021 NFL Draft.
According to a report by NFL Network's Tom Pelissero, Wade signed with Pittsburgh in the minutes following the draft.