In 15 games this year, Wallace led the wide receiver room with 46 receptions for 720 yards and four touchdowns.
Allen spent one year in the same role at Penn State.
Evans finished his time at Penn State with 564 yards and seven touchdowns on 30 catches.
"We have accomplished so many great things here as a family, but I believe the best is yet to come."
Tom Allen is expected to join Clemson in a lateral move.
