The Steelers have signed 2006 Heisman Trophy quarterback Troy Smith to a reserve/futures contract. Smith spent three seasons with the Ravens from 2007-09, beating the Steelers as a rookie starter in 2007. He was with the 49ers in 2010 and last played with the Omaha Nighthawks of the United Football League.

The Falcons have hired Mike Nolan as their defensive coordinator, the team announced Tuesday. Nolan spent the last two seasons as the Dolphins' defensive coordinator, according to an ESPN.com report.

The Broncos signed long-time long snapper David Binn on Friday after Lonie Paxton was ruled out of their divisional playoff game against New England so he could continue dealing with a family issue. Binn, who turns 40 next month, spent 17 seasons with the division rival Chargers from 1994-2010, appearing in 256 regular season games, a dozen playoff games and one Pro Bowl. Paxton has been dealing with an undisclosed family issue all week and was officially ruled out Friday along with receiver Eric Decker (knee).

The Titans have signed tight end Craig Stevens to a new four-year contract. Agent Kenneth Zuckerman said Friday that the four-year deal is the first since the NFL season ended taking advantage of the new labor deal rewarding veterans hitting free agency for production over rookies. "Obviously by the terms and the deal, he saw how valuable he was to that team and how important he was," Zuckerman said. "He's real excited to get this behind him and start to prove to everyone that he’s worth it." The 6-foot-3, 268-pound Stevens was a third-round draft pick out of California in 2008 and has 24 starts over the past two seasons.

The Cowboys hired Bill Callahan as their new offensive line coach Thursday and added a surprise twist, listing him as offensive coordinator. Dallas also hired Jerome Henderson as its new secondary coach, according to an Associated Press report.

The Jaguars have hired Falcons offensive coordinator Mike Mularkey as head coach, a move they hope will help improve the league's worst offense. The team plans to introduce Mularkey at a news conference Wednesday.

The Chiefs made Romeo Crennel the permanent head coach on Monday after he led the floundering team to a pair of wins late in the season. Crennel had been the interim coach and the leading candidate to replace Todd Haley, who was fired last month. He was scheduled to be introduced at an afternoon news conference.

The Chargers named John Pagano the team’s new defensive coordinator, replacing Greg Manusky, who was released earlier in the day. Pagano spent the last 10 seasons on San Diego’s staff and has coached linebackers since 2005. “John has worked extremely hard and been very patient to get this opportunity,” Head Coach Norv Turner said. “I’m excited about John’s experience with this defense, his familiarity with our team and where we can go with his direction.” “I think the No. 1 thing is that we come together as a defensive staff and we work together to get everybody going in one direction,” Pagano said. “Our primary goal is to win the AFC West, but the ultimate goal is to win a Super Bowl.” “We’re going to go out and play fundamentally sound defense,” Pagano said. “I’m very humbled and honored that they would consider me for the position,” Pagano said. “It’s something I’ve always dreamed about, being here 11 years in San Diego.”

Tony Gonzalez isn't retiring just yet. The Falcons have signed the tight end to a one-year, $7 million contract extension. He has 79 catches for 867 yards and seven touchdowns in 2011, which is better than his production the previous two years. Jay Glazer of FOX Sports first reported the extension.