Packers pass rusher Micah Parsons has been dealing with an L4/L5 facet joint sprain in his back and he may take an epidural injection before Sunday's game against the Detroit Lions if needed to help him play, sources told ESPN's Adam Schefter on Monday.

Before trading Parsons last week, the Dallas Cowboys prescribed him a five-day course of prednisone, an anti-inflammatory corticosteroid to help him recover from back tightness. They also had him on a physical therapy program.

Parsons has been practicing this week, and he is trying to play Sunday, although one source told Schefter it still is not certain if he will.

The Packers traded two first-round draft picks and defensive tackle Kenny Clark to the Cowboys last Thursday to acquire Parsons. Green Bay then signed him to a four-

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