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.
Fuller (knee) was a limited participant in Wednesday's practice.
Fuller is still recovering from mid-August arthroscopic knee surgery, and has yet to take the field this season. He was limited in practice last week before ultimately being ruled inactive. The Bears are likely exercising caution with the 24-year-old in order to ensure his health going forward. He is trending toward another questionable designation for Sunday night's game against the Bears. Delondre' Hall figures to be in line for another start if Fuller cannot play.
Braunecker worked out on the side of practice on Thursday as he recovers from an ankle injury, Brad Biggs of the Chicago Tribune reports.
Braunecker is an undrafted rookie who faces an uphill battle to make Chicago's roster, as he's buried on the depth chart. The sooner he can return to action the better, and it appears he's nearing a return now that he's been able to at least work out on the side. Rob Housler and Gannon Sinclair will likely continue to see extra reps as long as Braunecker is out.
Ferguson has been handed a four-game suspension for a violation of the NFL's policy on performance-enhancing substances, Jeff Dickerson of ESPN Chicago reports.
After notching three tackles in four games, Ferguson was placed on season-ending injured reserve in October due to a nagging knee injury. Thus, his ban won't kick in until he's healthy enough to take the field during the 2016 campaign.