Allen was listed as a limited practice participant Wednesday due to a heel injury.
Allen sat out practice Aug. 28 due to discomfort in his foot, but the issue since has been clarified to be to his heel. After returning to drills Wednesday, he'll have two more opportunities this week to get back to full activity before the Bears potentially give him a designation ahead of Sunday's contest against the Titans. If he remains banged up or even is sidelined this weekend, Allen's absence would open up targets for DJ Moore and rookie first-rounder Rome Odunze.