The Falcons, in a salary cap move, are set to release starting right tackle Tyson Clabo later today. “We’re really disappointed,” said Clabo, who was notified about the release at 7:30 a.m. Thursday. “This was unexpected.” The move, which will be announced as a post-June 1 cut, will save the team $4.5 million. The team is currently $2.9 million under the salary cap and are positioning themselves to take on a big contract extension for quarterback Matt Ryan, who could become a free agent after next season without a new deal. After bumping around the league as an undrafted player from Wake Forest, Clabo broke into the Falcons starting lineup in 2006 under former coach Jim Mora. Clabo, 31, started out as a right guard, but was moved to right tackle in 2007. He’s been a mainstay, starting 100 regular season games and five playoff games.