Allen is the second defensive back to join the Nittany Lions' deep Class of 2022.
Tickets go on sale for graduate students on Monday, June 20, followed by seniors on Tuesday, juniors on Wednesday, sophomores on Thursday, and freshmen on Friday.
Just like that, the Nittany Lions now have commitments from two of the top-ten running back prospects in the nation.
According to 247Sports, Birchmeier is currently ranked the No. 1 interior offensive lineman in his class. He's also pegged as the No. 1 prospect from Virginia.
Barkley is estimated to earn north of $10 million in endorsement deals each year -- all of which would be converted to Bitcoin moving forward.
The offensive tackle will finish his senior season with Harvard before transferring to Penn State next spring.