Jamaal Charles could miss Week 1 of the regular season.

"I think Jamaal is going to need a little time to keep working to get himself back," Andy Reid said. "We'll see how he does after a couple of days off."

Charles continues to rehab from an ACL tear he suffered in Week 5 last season.

Spencer Ware would likely start for the Chiefs if Charles sits. Ware had 403 yards on 72 attempts (5.6 average) last season.