Was there news about his being shifted to 3 technique tackle (DT)? I can't find any such recent news.
The news reported that he made the switch from LB to DE back in March. I was actually more surprised that he was listed as a linebacker, since we were recruiting him as a DE / edge.
As a weakside or rush DE, 242 lbs is sufficient at the college level if your technique and conditioning are good. I remember Devon McDonald playing at about 235 lbs, as a weakside DE in 1991 and 1992, and doing about as well as anyone.
He has plenty of time to add another 15-20 lbs to his frame, and would be well suited for either WDE or SDE.
Link: https://www.al.com/alabamafootball/2024/03/former-5-star-keon-keeley-changes-positions-in-alabama-defense.html