The Eagles signed Polk as an undrafted free agent in 2012, and his only offensive action game last season when he had 11 carries for 98 yards and three touchdowns along with four catches for 61 yards. He suffered a shoulder injury last season that required surgery in January, and a history of shoulder issues led to him falling down draft boards heading into the 2012 draft.
Polk plans to resume practicing next week even if he's not 100 percent healthy, so the Eagles' recent acquisition of Kenjon Barner seems to have gotten his attention. Barner played for head coach Chip Kelly at Oregon, so he is theoretically a great fit for Philadelphia's offense and could push for an immediate role if Polk struggles to stay on the field going forward.
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