Allen (knee) finished 2023 with 53 tackles (30 solo), 5.5 sacks and one pass defense in 16 games.
Allen (knee) has been ruled out ahead of Sunday's game against the Cowboys, John Keim of ESPN.com reports.
Allen (knee) did not participate at practice Wednesday, John Keim of ESPN.com reports.
Allen logged five total tackles (three solo) in Sunday's 27-10 loss to the 49ers.
Allen recorded four tackles (three solo) including 1.5 sacks in Sunday's 31-19 loss versus the Giants.
Allen accumulated four solo tackles and one sack in the Commanders' Week 10 loss to the Seahawks.
Allen and the other Commanders defensive linemen are subject to trade rumors in advance of Tuesday's trade deadline, Jay Glazer reported on Fox NFL Sunday.
Allen (knee) does not carry an injury designation into Sunday's game at the Giants.
Allen (knee) was a limited participant at Washington's practice Wednesday.
Allen had three tackles (two for a loss) and a sack in Sunday's 20-16 win over the Cardinals.