Bears linebacker Brian Urlacher won't face the Cardinals on Saturday because of a lingering calf injury. Urlacher missed his fourth straight day of practice on Thursday because of a strained left calf muscle suffered against the Raiders. "Brian Urlacher is getting better, but he won't play this week," coach Lovie Smith said.

The Bears starters are expecting to get more playing time against Arizona and also are hoping to see a little bit more of the playbook unfold as well. ?We?re probably going to open it up a little bit more now. We game planned for this one, so we will open it up,? wideout Devin Aromashodu said. ?I?m real excited. We?re treating it like a regular-season game, so I?m ready to go.?

The Chicago Bears have signed QB Todd Collins to a one-year contract. Terms of the deal were not disclosed. Collins has completed 381 of 674 passing attempts (56.6 percent) for 4,479 yards, 22 touchdowns and 19 interceptions to compile a 76.0 passer rating in 47 games (20 starts) with the Buffalo Bills, Kansas City Chiefs and Washington Redskins. Collins was originally drafted in the second round (45th overall) of the 1995 NFL Draft by the Buffalo Bills out of the University of Michigan.

The Chicago Bears signed QB Matt Gutierrez to a one-year contract and DB Aaron Webster to a two-year contract. Terms of the deals were not disclosed. Gutierrez entered the league as an undrafted free agent with the New England Patriots in 2007 out of Idaho State. He appeared in five games for New England his rookie year and completed his only attempt for 15 yards. In 2008, Gutierrez was on the active roster for the final 16 weeks of the season, after starting out on the practice squad, but was inactive for 14 contests and did not play in the one game he was active. After being acquired off of waivers by the Kansas City Chiefs in 2009, Gutierrez appeared in one contest completing his only pass attempt for three yards. He was released by the Chiefs in June of 2010.

The Bears could sign free-agent quarterback Matt Gutierrez on Wednesday. Given Chicago's issues at the position it's possible that Gutierrez could even play against the Raiders this weekend. "Believe it or not, we have given a little bit of thought to that matter," coach Lovie Smith said when asked how he would manage the position. Jay Cutler's backup, Caleb Hanie, injured his shoulder this past weekend.

The Bears have asked quarterback Trent Green to come out of retirement, but he's not interested. "We had some conversations about it, but Trent's been engrossed in broadcasting," agent Jim Steiner said. "It just didn't work out." Green, who retired in 2009, does broadcasting work for the NFL Network and Westwood One Radio.

Chargers defensive coordinator Ron Rivera is concerned about the offense Mike Martz might be building in Chicago. San Diego and Chicago will play a preseason game on Saturday. "We went back and we watched Coach Martz's offense and things he had done in the past," Rivera said Friday on "The Waddle & Silvy Show" on ESPN 1000. "We looked at some [film] later on San Francisco stuff where they started to get explosive down the end of the 2008 season. "Really saw some things that were, I don't want to say scary, but it causes a little bit of concern because of how they attacked vertically." Rivera, who was the Bears defensive coordinator from 2004 to 2006, understands the danger of attacking the wide-open system. "If you're playing coverage, you got to be over the top of everybody because if the quarterback hits the guy running down the seam, it's going to be a big play," he said. "If you bring pressure, you got to make sure somebody is running with everybody else, or it's a big play. There is some concern because its an explosive offense."

Bears quarterback Jay Cutler cautioned that he'll throw interceptions this season, just hopefully not at the rate he did last year. Cutler tossed 26 picks in his first season with Chicago. A local newspaper has been charting his interceptions during training camp. "I'm going to throw some this year," he said Wednesday on "The Waddle & Silvy Show" on ESPN 1000. "I'm not going to lie about that." Cutler will enter the season under his third offensive coordinator in as many years (Mike Martz). "There are going to be some balls that are picked off," Cutler said. "It's part of the game. But we can't worry about it. Defenses will make adjustments, we have to make them back."

The Chicago Bears signed LB Kelvin Smith to a one-year contract and waived/injured Antonio Robinson. Terms of the Smith deal were not disclosed. Smith was originally drafted by the Miami Dolphins in the seventh round (219th overall) of the 2007 NFL Draft. The 6-2, 233-pounder out of Syracuse appeared in seven career NFL games for the Dolphins (four in 2007) and Carolina Panthers (three in 2009). He also spent time with the New York Giants during the 2009 offseason.

Just a week into training camp, wide receiver Johnny Knox appears to be the top target of Bears quarterback Jay Cutler and offensive coordinator Mike Martz. Knox has been targeted more than any of Chicago's other receivers. According to the Chicago Tribune's chart of 11-on-11 and seven-on-seven drills to this point, Knox has been targeted 55 times, 16 more than Devin Hester and Greg Olsen. "We're installing right now and depending on the coverages the ball will go different places," Martz said. "Everything we script is just plays going in so it depends on what the defense is doing. Because of our defense, some of what we're doing, the weak side is going to get kind of emphasized."