Allen played at Lassiter for Irwin, who resigned in November after nine seasons and is now coaching at Whitley County High in Kentucky. At Lassiter, Allen developed into a prospect who was rated the No. 106 player in the country and the No. 14 player in the state of Georgia for the 2018 signing class. He also fielded scholarship offers from Clemson, Alabama and Georgia.
Should Allen follow the conventional transfer route, he will sit out the 2019 season and have three seasons of eligibility starting in 2020. In the event he pursues and obtains an immediate-eligibility waiver from the NCAA, he would be eligible to play this season and have four seasons of eligibility.