Allen was waived by the Commanders on Tuesday, Zach Selby of the team's official site reports.
Allen was unable to make the team despite the recent trade of Jahan Dotson, a relatively open receiver room behind Terry McLaurin and a Deebo Samuel comparison from Washington's offensive coordinator, Kliff Kingsbury, almost a week ago. The wide receiver had four carries for 15 yards and one catch for 12 yards during the preseason.