Philadelphia Eagles head coach Chip Kelly has revealed that safety Earl Wolff sustained a knee injury in his side's win over the Chicago Bears.
Wolff made his return to action against Marc Trestman's side after four games out with the problem but just a quarter into the match he re-aggravated the ailment, and is now facing a fight to be fit to face the Dallas Cowboys on Sunday.
"We were ahead, and then obviously he's been out for a while, so we were just going to try work him back in the lineup," Kelly told the Philadelphia Inquirer.
"And then we got a lead and we didn't feel like we needed to put him back out there. We'll see how he goes this week."
Philadelphia can secure their place in the post-season with a win over the Cowboys on Sunday.
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