Bosa's (knee) tendinitis symptoms have been subsiding recently, David Lombardi of SFStandard.com reports.
Bosa continues to work toward a return to the field. The 49ers' defense is in desperate need of the star pass rusher's services after preseason game and joint practice failures on the defensive line. The 28-year-old is still considered week-to-week, with coach Kyle Shanahan saying Tuesday that the star is doing well. Bosa has a floor of 9.0 sacks when healthy, so the team will likely do whatever it takes to ensure he's on the field for the regular season.