The Bears on Wednesday bolstered an injury-depleted position by signing safety Troy Nolan.
"It's a blessing to come here and get signed, and I'm just trying to do my best and help these guys get into the postseason," Nolan said Wednesday before practice.
Nolan was selected by the Texans in the seventh round of the 2009 draft out of Arizona State. After missing his entire rookie season with a wrist injury, he made his NFL debut in 2010, intercepting two passes in a Week 4 win over the Oakland Raiders.
Nolan was claimed off waivers by the Dolphins prior to this year's regular season opener and later waived by Miami Sept. 25. He re-signed with the Texans Oct. 2 and was waived Nov. 17. Nolan appeared in seven games with one start for Houston and Miami this year, recording five tackles.
After placing Craig Steltz (chest) on injured reserve Dec. 11 and losing Chris Conte to a hamstring injury in last Sunday's win in Arizona, the Bears had only two healthy safeties on their 53-man roster in Major Wright and Anthony Walters, who replaced Conte against the Cardinals.
Nolan could see action on defense and special teams in Sunday's season finale in Detroit.
"It's very hard to learn a playbook in this amount of time, but I've just got to pick up what I can pick up and go with it like that," Nolan said. "I've got to stay ready and get in with the coaches."