Aaron Wilson of Profootball.scout.com reports the Broncos auditioned former Lions running back Aaron Brown and defensive backs Trevard Lindley and David Jones, according to a league source.
None of the players were immediately signed.
Brown is a former Lions sixth-round draft pick from TCU who has rushed for 189 career yards in the NFL with 17 receptions for 129 yards.
Jones is a former New Orleans Saints fifth-round draft pick from Wingate University who has also played for the Cincinnati Bengals and Jacksonville Jaguars.
Lindley, 25, is a former Eagles fourth-round draft pick from the University of Kentucky.