After releasing players on Monday and Tuesday, the Detroit Lions decided to sign someone on Wednesday. Specifically, they added cornerback D.J. Johnson (also known as Domonique Johnson) to their roster.
Johnson was just recently released by the Washington Redskins. He appeared in 7 games for the Redskins in 2012 and had 8 tackles. He also spent time with the Redskins in 2011. In between his two stints with the Redskins, Johnson spent time with the Philadelphia Eagles and Indianapolis Colts. He also has been with the Denver Broncos, New York Giants, Tampa Bay Buccaneers and Minnesota Vikings.
According to The Free Lance-Star, Johnson served as the Redskins' nickelback in the latter part of the 2012 season. Johnson ended up going on injured reserve as the end of the regular season, and he apparently lost his spot as the nickelback after struggling against the Eagles.
Given his track record, Johnson seems like a camp body more than anything. I suppose you can't rule any cornerback out from making the roster right now, but given how many teams he's been on since entering the NFL in 2009, I don't expect much out of him.