Allen (hamstring) was a limited participant in practice Wednesday, Ellie Kinney of the Broncos' official site reports.
Allen sustained a hamstring injury during his first game with Denver in Week 12, and he has been sidelined the past two weeks as a result. However, it appears the 27-year-old could be trending toward a return heading into Sunday's game against Arizona. Allen has exclusively played on special teams in five games between Cleveland and Denver this season.