San Francisco 49ers running back Christian McCaffrey is set to ramp up his rehabilitation efforts following a trip to Germany for treatment on his Achilles tendinitis. Coach Kyle Shanahan indicated that McCaffrey may begin more intensive rehab soon, although he remains on injured reserve and may not return until Week 6 or later. There were earlier concerns about his health, including a potential move to short-term injured reserve due to calf and Achilles injuries.

• McCaffrey's rehabilitation is progressing, but his return timeline remains uncertain.
• Concerns about his health led to discussions about placing him on short-term injured reserve.