NFC North at night

Catching up on Mondays newsbits in the NFC North:

Chicago Bears: Receiver Johnny Knox had successful back surgery Monday, the team announced, and the prognosis for continuing his career is good. Meanwhile, coach Lovie Smith refused to name a starting quarterback for the Bears' next game, sparking speculation that he will bench Caleb Hanie for either Josh McCown or Nathan Enderle.

Detroit Lions: Coach Jim Schwartz said he hasn't ruled out any player on the active roster for Saturday's game against the San Diego Chargers. That includes defensive end Lawrence Jackson (thigh), cornerback Chris Houston (knee) and safety Louis Delmas, who had arthroscopic knee surgery on Saturday.

Green Bay Packers: Right tackle Bryan Bulaga has a sprained knee cap and isn't likely to play Sunday night against the Bears, coach Mike McCarthy told reporters. Rookie offensive lineman Derek Sherrod has already undergone surgery on his broken leg. McCarthy indicated the Packers will practice this week with T.J. Lang at right guard and Evan Dietrich-Smith at left guard, but he also said that veteran left tackle Chad Clifton is expected to return to individual drills Wednesday.

Minnesota Vikings: Two players are being monitored after suffering concussions Sunday: Left guard Steve Hutchinson and cornerback Asher Allen. Meanwhile, tight end Visanthe Shiancoe told reporters that some of his teammates quit in Sunday's loss to the New Orleans Saints. "Not a lot though," Shiancoe said. "Like a very small handful of guys."