The Cowboys signed Joe Looney to a two-year deal Tuesday, according to his agent on Twitter.
Looney replaces Mackenzy Bernadeau as a backup center and offensive guard, whom the Cowboys likely make active on game day because of his ability to play all three interior positions. Bernadeau, who was active for all 32 games the past two seasons in Dallas, signed with the Jaguars in free agency.
Looney played both center and guard for the Titans last season. Looney, 25, started a career-high six games last season for the Titans after starting only four in his three seasons in San Francisco.
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Looney becomes the fourth free agent from outside the building the Cowboys have added. They also signed defensive lineman Benson Mayowa, defensive tackle Cedric Thronton and running back Alfred Morris.
Free agent defensive end Jason Jones also visited Tuesday.