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.
Walker has an ACL injury that will cause him to miss the entire 2016 season, Mike Klis of The Denver Post reports.
Walker was carted off the field during Monday's practice, and an MRI confirmed the worst case scenario. The veteran defensive lineman was projected to backup Derek Wolfe on the left side of the line this season. Calvin Heurtelou now figures to slide into that role.
Ware (undisclosed) practiced in half-speed team drills Wednesday, Mike Klis of 9news reports.
The Broncos looked like their old selves Wednesday with the returns of both Aqib Talib and Ware. While the quarterback dilemma is likely to linger on all season long, having Ware back on the field is a huge boost, regardless of form. In just 11 games last season, the 34-year-old registered 7.5 sacks to compliment 25 combined tackles. Ware is an unquestionable leader of Denver's defense, and the mere sight of him on the practice field is likely to lift team spirits.
Talib (leg) returned to practice Wednesday, Mike Klis of 9news reports.
Talib's roller coaster offseason seems to finally be approaching a halt. His leg is near 100 percent, and after a report earlier this week indicating that Talib is likely to play on Saturday, there is reason to be optimistic in Denver. The Broncos have a plethora of stability issues at the moment, so seeing Talib back on the practice field Wednesday has to be reassuring for coach Gary Kubiak and company.