Of the nine players that were limited in Wednesday's practice for the Redskins were Jordan Reed and Josh Norman -- both in concussion protocol -- and Trent Williams.

The Washington Redskins continue to monitor some of their injured players as they returned to the field on Wednesday, as tight end Jordan Reed (concussion), cornerback Josh Norman (concussion) and tackle Trent Williams (knee) were all limited participants.

Reed and Norman remain in concussion protocol and must be cleared before potentially playing this Sunday against the Cincinnati Bengals at Wembley Stadium in London.  They have appointments tomorrow prior to the team's departure.

"If they're cleared, they'll go on the trip," Gruden told reporters. "If they're not cleared, if we're having still some pain and setbacks, at that point we'll make that decision to probably leave them back."

Reed told reporters that he currently feels "symptom free," but is in constant touch with the team's training staff, his doctors and others.

"[They're] just telling me to take my time, make sure I'm ready before I just go back out there," Reed said.

The fourth-year University of Florida product has missed the Redskins' last two games with Vernon Davis carrying the load at the tight end position.

Appearing on all but two of the Redskins' 147 offensive snaps combined against the Philadelphia Eagles and Detroit Lions, Davis has filled in quite well for Reed, as the 11-year veteran has collected eight catches for 129 yards and a touchdown.

Washington, of course, also has Niles Paul, but a returning Reed would be a huge asset for the Redskins in front of an international crowd.

"I create some matchup problems and stuff with the defense and things like that," Reed said. "That's what I think I bring to the table."

Norman, like Reed, will have to be cleared by doctors in order to play. If active, he'll have a large task starring him down on the other side of the line of scrimmage, as A.J. Green is well on his way to another All-Pro season as he's already collected 775 receiving yards in just seven games.

Three different times this season Green's caught at least eight passes for 169 yards and a touchdown.

"Anytime your best player is not going to go, it has a concern, but when he does go, you have a comfort level," Gruden said. "That's why we signed him for guys like A.J. Green and that matter, but either way we still have to strap it up and play. If he doesn't go we feel good about [Bashaud] Breeland, we feel good about [Quinton] Dunbar and [Greg] Toler, like I said. So we've got a great competitive group. They show no fear back there and they're going to compete."

Williams, meanwhile, impressively was on the practice fields at the Inova Sports Performance Center at Redskins Park in Loudoun County, Va., just days after being removed from the Lions game with a knee injury.

The three-time Pro Bowler struggled to walk in the minutes following his injury, but was able to practice with his teammates on Wednesday.

Williams believes the only way he'd miss any more game action – he did not play the final play in Detroit -- is if his knee was "torn or broken." An MRI on Monday revealed that his knee is "structurally OK."

"A sprain, I can get through that. Bruises, I can get through that," Williams said. "As long as the doctor tells me that there's nothing structurally wrong with what I've got going on, then I'm going to do everything I've got to do to get on the field."

If Williams is able to play, he'll be tasked with stopping a defensive unit that's collected 15 sacks and allowing less than one rushing touchdown per contest.

"You want to put your best play on the field any time you step out there, but I think playing guys like that – really good players – it also brings out the best in you where you really don't have time to feel sorry for yourself," Williams said. "I know they don't care that I'm hurt. Nobody else does either. If I'm out there on the field, I know that everybody expects me to produce. That's the only thing I can worry about is producing at a high level."