According to the twitter of Kyle Meinke.
Alabama now down two defensive backs in 2 days, after Travell Dixon departed for "personal reasons" and Jarrick Williams tore his ACL
Williams is going to be out for the season following this injury. Hopefully he's able to make a full recovery.
After a quick search, he was a consensus 4 star safety who was going into his junior year, and had played the past two years as a backup and on special teams. I don't think he would have gotten much playing time this year on defense just by looking at Bama's depth chart as he didn't crack the two deep at either safety spot.