Bosa (hamstring) was a limited participant during Wednesday's practice.
Bosa has yet to make his NFL debut thus far, but his limited participation at practice this early in the week could be a sign he'll have a good chance to play Sunday against the Saints. He remains buried behind Darius Philon and Tenny Palepoi on the depth chart at left defensive end.
Bailey (ankle) reached an injury settlement with the Chargers on Friday, Michael Gehlken of the San Diego Union-Tribune reports.
Bailey signed with the Chargers in early-August, but didn't see a minute of preseason action. The agreement removes him from the team's injured reserve list, leaving him free to sign with another team.
Square has been suspended four games by the NFL, the team's official site reports.
Square's suspension stems from a violation of the league's substance abuse policy. Early reports indicate that Square did not test positive for a specific substance, but the 27-year-old missed a scheduled test. Both Ryan Carrethers and Tenny Palepoi are likely to fill in during his absence.
Smith (suspension) has entered a treatment center, ESPN reports.
Smith's reason for seeking treatment is unclear, but it comes just days after a Periscope video titled "Fire up session" surfaced of an unidentified man, suspected to be him, talking about a hand-rolled cigarette shown on screen. In wake of that video, which appeared under an account previously used by Smith, the NFL has launched an investigation into whether he violated protocols required of a suspended player seeking reinstatement from a substance abuse violation. While that investigation continues, Smith's move to now enter a treatment facility hardly seems coincidental, and more details regarding his situation should surface soon.