Overview
- McCaffrey missed most of training camp but has been practicing since Tuesday.
- He insists his Achilles is not a concern and feels 'much better' now.
- 49ers' coach and GM are confident McCaffrey will be ready to play.
- The team will honor Frank Gore at halftime during the season opener.
- Other key players, including Trent Williams and Brandon Aiyuk, are also returning to practice.