Lloyd has been hobbled by a knee injury while Manning has a pulled hamstring.
Vasher has missed the past two games, and Chicago's short-handed secondary took a few more hits last week against Atlanta. McBride and Tillman went down in the second quarter, and Manning, the Bears' nickel back, injured his hamstring in the third.
Lloyd was hurt against Philadelphia on Sept. 28 and will miss his third straight game.
Copyright 2008 by The Associated Press