Michael Bush has thumb surgery

Oakland running back Michael Bush underwent surgery for his broken left thumb Monday. The insertion of screws was needed to repair the thumb.

The team said it hopes Bush can play in the season opener Sept. 12 at Tennessee. If Bush, who was hurt Saturday night against San Francisco, tries to play against the Titans, blocking and catching the ball could be tricky. Darren McFadden will likely start, if Bush can't play. McFadden has played one preseason game after dealing with a hamstring injury.

Meanwhile, quarterback Jason Campbell wasn’t on the practice field Tuesday when the media was allowed to watch. Oakland coach Tom Cable didn’t have any updates, but Campbell was seen throwing passes Monday. He suffered a stinger and a wrist injury against the 49ers and there’s a good chance Campbell will be rested in the preseason finale. He probably wouldn’t have played much even if he was healthy, but practicing 13 days before the opener is a good sign.

The Denver Post reports left tackle Ryan Clady could play a few snaps Thursday at Minnesota. It could be the only preseason work he gets in. He returned to practice last week after tearing his patella tendon in his knee in April while playing basketball. If Clady plays Thursday, it means he should be ready to debut in the season opener at Jacksonville on Sept.12.

FOX’s Jay Glazer is reporting that the Cardinals are shopping Matt Leinart. I don’t think any of the AFC West teams would make a serious push for him. I think the teams in the division feel pretty good about their starting and backup situations at the position.

Any speculation that Plaxico Burress will play for the Raiders in 2010 can now end.