It was discovered early on Wednesday that wide receiver Xavier Williams wasn’t listed on Alabama’s 2021 roster. Now, we know the reason why.

Crimson Tide head coach Nick Saban told reporters on Wednesday evening that Williams won’t be playing this season due to a medical issue. However, Saban didn’t further clarify on what Williams may be going through.

“Without saying what, he’s medically not going to play this year,” Saban told reporters, including Charlie Potter of 247Sports.

That’s going to hurt Alabama’s depth in the receiving corps this year, considering Williams played six games for the team last season. He had 3 receptions for 24 yards, one of which was a 12-yard grab in the Crimson Tide’s victory over Ohio State in the College Football Playoff National Championship Game.

Alabama should still have a strong group of wide receivers, though, as it returns junior John Metchie III and redshirt junior Slade Bolden, among others.

Williams was entering his redshirt junior season in 2021. He was a 4-star wide receiver (per 247Sports Composite) out of Chaminade-Madonna College Preparatory School in Hollywood, Fla., in the Crimson Tide’s 2018 recruiting class.