The 13-year-old has gone viral multiple times for his love of Carson Wentz and the Eagles.
The Nittany Lions have already welcomed three new coaches to their staff this year.
Myrick played both running back and cornerback at Bishop Guilfoyle High School.
Loggains will take the role formerly held by newly promoted tight ends coach Ty Howle.
"When I got into [coaching], this was my ultimate goal, to get back to a place that gave me so much. This is home for me."
Do you want to be the next Carl Nassib?