IRVING, Texas -- With Tony Romo ailing, the Dallas Cowboys have reached into their recent past by agreeing to a deal with veteran Jon Kitna.

Veteran quarterback Jon Kitna will be making his second stop in Dallas, pending a physical. Wesley Hitt/Getty Images

The 41-year-old Kitna was signed by the Cowboys on Wednesday and with the team at practice later in the afternoon. To make room on the roster, dallas released wide receiver/kick returner Micheal Spurlock.

Kitna last played for the Cowboys in 2011 and then retired. He has been teaching and coaching high school football in Tacoma, Wash.

The Cowboys have not ruled out Romo from playing Sunday against the Philadelphia Eagles, despite a back injury. However, sources have told ESPN's Adam Schefter and Chris Mortensen that Romo will not play this season and needs back surgery.

Sources said Romo had an epidural injection on Monday, and the hope is it quells the back troubles enough for him to be able to play.

Kyle Orton will start if Romo can't play.

The Cowboys worked out David Carr, John Skelton, Tyler Thigpen, Caleb Hanie and Richard Bartel on Tuesday, but elected to go with Kitna, who knows the Cowboys' offense and most of their personnel, but has been out of the NFL for two seasons.