Garcon was limited in practice again Friday and is listed as questionable. He was hurt in last week's win over the New Orleans Saints, when he also had an 88-yard reception for Robert Griffin III's first career touchdown pass.
Coach Mike Shanahan said if Garcon "can go live with the pain, and he feels like he can go full speed, then you let him go."
Aldrick Robinson likely would start if Garcon can't play.
Shanahan said former Redskins tight end Chris Cooley met with general manager Bruce Allen on Thursday, but nothing is imminent because Cooley is still looking for a job somewhere as a starter.