Green Bay Packers defensive lineman Ryan Pickett will miss his second straight game because of a concussion.
Wide receiver Greg Jennings and tackle Bryan Bulaga have also been ruled out for Sunday night's home game against the Chicago Bears because of knee injuries.
Defensive lineman Mike Neal (shoulder) is questionable.
Pickett, who sat out Green Bay's first loss of the season to Kansas City on Sunday, missed practice for three straight days and was ruled out Friday. He has 32 tackles in 13 games for the Packers this season.