"We'll wait all the way right up to game time to see if he can bounce back from this thing," coach Pete Carroll said.
Chancellor suffered the injury in the first quarter of last week's game against the Baltimore Ravens.
If he can't go, Kelcie McCray would fill in. McCray has been in the league since 2012 but has never started a game. The Seahawks dealt a fifth-round pick to the Kansas City Chiefs to acquire McCray in September.
Meanwhile, cornerback DeShawn Shead (ankle) is listed as questionable, but Carroll said he will start.