The Dallas Cowboys have already accomplished two of their primary goals in free agency, upgrading their secondary and getting a veteran backup quarterback.
The person spoke to The Associated Press on the condition of anonymity because the team had not yet announced the deals.
Carr was one of Dallas' top targets. Team officials visited with him at Cowboys Stadium within hours after the free agency period began Tuesday afternoon.
The 39-year-old Kitna appeared in only three games last year after starting the final 10 games in 2010 when Romo broke his collarbone.
Orton has started 69 of his 71 NFL games over six seasons with Chicago (2005-08), Denver (2010-11) and the Chiefs. He has completed 1,284 of 2,204 passes (58 percent) for 14,532 yards with 80 touchdowns and 57 interceptions.
The 6-foot-4, 308-pound Bernadeau has started 20 games and played in 47 over the past four seasons for the Panthers at guard. However, after starting 12 games in 2010 he was replaced in the starting lineup at right guard and started only one game last season.
Bernadeau, 26, is entering his fifth season in the league out of Bentley College
"They brought him in to be a starting guard," Boyev said. "He's really thankful for his time in Carolina. It's a team that took a chance on a kid who came from a Division II college, so he's grateful for that."
AP Sports Writer Steve Reed in Charlotte, N.C. contributed to this report.