Williams suffered a torn ACL in Week 9 last season and was seen doing resistance bands workouts at the team’s facilities last month. The second-year pass rusher totaled 11 tackles, four TFLs, and one sack in his rookie season before going down, and is one of a handful of players the Niners are hoping to have back on the defensive side of the ball. Veteran pass rusher Nick Bosa (knee), who also suffered a torn ACL last season, is also working his way back to the field and said he is “pretty far along” in his recovery. If either player is unable to go by the start of camp, they will likely be added to the PUP list with a chance to be activated when they clear all medical and conditioning tests.