On Tuesday the Saints placed LB Jo-Lonn Dunbar on injured reserve with a hamstring injury.
Dunbar started in place of Scott Fujita at strongside linebacker. Should Fujita continue to miss time following an infected bursa sac, the Saints will be down to LB Troy Evans, primarily a special teams player.
Second-year Dunbar made the team as an undrafted free agent last year out of Boston College, is also an excellent special teams player, and will be missed on return teams as well.
That leaves an open roster spot on the 53-man roster.