they re-acquire Mike McKenzie to help out with db injuries.
edit: to include link http://sports.espn.go.com/nfl/news/story?id=4682551<h2>Source: Saints to sign McKenzie
</h2>Less than a week after signing veteran cornerback Chris McAlister, the Saints now are planning to sign former cornerback Mike McKenzie, according to a source close to the situation. McKenzie played for the Saints last season but suffered a major knee injury that sidelined him the rest of the season.
Some believed it might be a career-ending knee injury, but McKenzie apparently has regained his speed and is ready to play. He worked out during the summer for Seattle, and now will have to learn a new defensive scheme in New Orleans, where he played from 2005 to 2008. The unbeaten Saints will need all of the help they can get in preparation for next Monday night's game against New England.
</p>
Fortunately, the Saints are expecting positive news regarding their other players with injuries. Running back Reggie Bush (knee), defensive tackle Sedrick Ellis (knee) and cornerback Jabari Greer (groin) -- none of whom played Sunday against Tampa Bay --- all are expected to play against the Patriots.</p>