The Beaver Stadium addition is scheduled to be completed before the 2023 season.
Sanders is heading to the Panthers after spending the first four years of his career with the Eagles.
"His ability to relate to the players and recruits is also going to be a strength of his. He has the ability to be hard and demanding on them in a way that they respect and can relate."
In his spring ball press conference, James Franklin covered depth at multiple positions, the hiring of a defensive line coach, and more.
Last offseason, the offense faced off against the defense in a uniquely scored scrimmage.
Barnes spent the last three seasons as a graduate assistant working with the defensive line.