Willson joins starter Zach Miller on the inactive list. Miller is missing his third straight game with an ankle injury. The Seahawks signed Rashun Allen to give them two active tight ends for the game, along with Cooper Helfet.
Seattle is also without standout linebacker Bobby Wagner (foot).
Tharold Simon is set to make his NFL debut at cornerback for the Seahawks in place of injured starter Byron Maxwell (calf). Simon (knee) missed all of last season and the first six weeks of this season.