Ellerbe hasn't played in either of the Saints' first two games of the season due to a lingering quad injury. If he's unable to play yet again, Craig Robertson figures to be in line for another game of extensive action.
Jordan was a surprise addition to the injury report this week, but the specifics of his injury remain vague. Bobby Richardson may get the start at defensive end if Jordan is ruled out.
Breaux suffered a broken fibula against the Raiders in Week 2 and isn't expected back until Week 8.
In the wake of OLBs DeAndre Levy (quadriceps) and Antwione Williams (hamstring) being ruled out for the Lions' divisional showdown with the Packers on Sunday, Detroit only had two healthy outside linebackers left standing. Wideout Aaron Dobson was released to make room.
Reed was unable to play last weekend after sustaining a shoulder injury in Atlanta's season opener. While he remained limited in practice this week, he appears poised to reclaim his starting role against the Saints.
With starter DeAndre Levy (quadriceps) also ruled out, the Lions will have just two healthy outside linebackers to deploy against the Packers.
Levy was previously listed as doubtful to play against the Packers. His absence is a blow for a Detroit defense already without the likes of DE Ziggy Ansah (ankle).
Barnes was previously considered questionable. His absence limits Detroit to four healthy cornerbacks available to deploy against Packers QB Aaron Rodgers.
If he's ultimately unable to play, Julius Peppers projects to start at outside linebacker as starter Clay Matthews (ankle/hamstring) has been ruled out.
Previously considered questionable to play, Guion participated in the Packers' practice on Saturday, but the coaching staff must not have been encouraged by the health of his knee. However, he wasn't expected to be ready anyway after sustaining a sprained MCL in Week 2.