The Detroit Lions have traded two late-round draft picks to acquire cornerback Chris Houston from the Atlanta Falcons.

The Lions also released defensive end Dewayne White today while announcing the re-signing of tight end Will Heller to a three-year deal and signing free agent wide receiver Brian Clark to a one-year deal.

Houston, a second-round pick for Atlanta in 2007, became expendable after the Falcons signed Dunta Robinson as an unrestricted free agent. The Falcons will receive an additional sixth-round pick from Detroit and move up from the 18th spot to second in the fifth round.

Houston has three interceptions and one forced fumble in 44 career games, 37 starts.

He wasn't the only defensive back added to the roster today. Detroit also agreed to terms with free agent cornerback Jonathon Wade. Wade spent his first three seasons in the league with the St. Louis Rams.

Houston is expected to fill a starting position for the Lions while Wade will be mostly used in nickel situations and add depth to a depleted secondary.

Heller joined the Lions before last season as an unrestricted free agent. He had 29 receptions, 296 yards and three touchdowns for Detroit. The team says Clark will compete at the wide receiver position and contribute on special teams.