The Lions and Falcons are discussing a deal to send CB Chris Houston to Detroit for a fourth-round draft pick, according to a league source.
The trade also would include the teams swapping fifth-round picks.
The Lions have been looking to upgrade at cornerback and even discussed trading for Antonio Cromartie, whom the Chargers sent to the Jets instead. The Falcons have a surplus at the position after signing Dunta Robinson.
Houston has started in 37 games during his three-year NFL career. He has 166 tackles and three interceptions.