RENTON, Wash. -- Seattle Seahawks head coach Pete Carroll said defensive end Jadeveon Clowney was away from the team Friday getting treatment on a sore hip that has him questionable for Sunday's game at Philadelphia.

Clowney will meet the team in Philadelphia and will be a game-time decision, according to Carroll. He didn't specify the nature or extent of Clowney's hip injury nor where he was receiving treatment, only saying it was off-site. The injury stems from the Seahawks' win over the 49ers two weeks ago, which preceded Seattle's bye.

"Something he felt in the game, came out of the game with a little something," Carroll said. "Just checking him out, making sure he's OK."

Clowney missed practice Wednesday, Thursday and Friday. The Seahawks weren't required to detail player participation in their "bonus Monday" practice.

Clowney has been the Seahawks' best pass-rusher this season -- he's fifth in the NFL in ESPN's Pass Rush Win Rate at 26.6% -- and arguably their most impactful defender. His dominant performance against the 49ers included a sack, five quarterback hits and his second defensive touchdown of the season.

Tyler Lockett, the Seahawks' No. 1 receiver, is expected to play Sunday after being limited in practice the last three days. He spent two nights at Stanford Hospital as a precautionary measure last week after suffering a lower leg contusion against the 49ers, which sidelined him for overtime.

"At this point it's not a dangerous injury now," Carroll said. "He had a real contusion in his lower leg that just needed some time. There was enough time fortunately. We had the week off. I don't know if he would have made it now if we had played last week. That would have been hard to see that happening. But he's ready to go now. He's fine."

The Seahawks on Friday placed veteran tight end Ed Dickson back on injured reserve, officially ending his season two days after he was activated off IR. The Seahawks had to activate Dickson this week in order to make him eligible to play this season. They promoted Tyrone Swoops from their practice squad while putting Dickson back on IR.

Tight end Luke Willson (hamstring) is listed as doubtful for Sunday, though Carroll came up with his own designation, calling him "probable-doubtful" in reference to Willson's history of being a quick healer. Jacob Hollister and Swoops are the only healthy tight ends on Seattle's roster, though backup tackle George Fant also plays a de facto tight end role.

The 32-year-old Dickson will have missed 22 of 32 regular-season games over his first two years with the Seahawks. He's set to count almost $4.3 million against the cap next season in the final year of his deal.

"Eddy, he's just not ready, and it's unfortunate and I feel bad for him and all," Carroll said. "It's just the right thing to do. He's not ready to play yet. He was ready to get back to practice. He did that. When we pushed it up, we could tell. So we had to move him back to IR. We had to activate him on Wednesday to make him available. He had a good day's work and you could tell. I sat with him .. talked through it and he understood. He could tell he doesn't quite feel as ready as he needs to be."