There also is a chance McCaffrey could return for an Oct. 27 game against the Cowboys, according to sources,” Schefter added. “But even more reasonably, the 49ers could opt

The workouts marked McCaffrey's first on-field work since landing on IR in Week 2 and came less than two weeks after he visited a specialist in Germany. Schefter deemed the lack of a flareup as "mild encouragement" and noted that the star running back's return will be dependent on how he fares in practice while also citing a source indicating that McCaffrey could return as soon as Oct.

Christian McCaffrey is eligible to return from injured reserve, but the running back is not ready to return. The 49ers will not activate McCaffrey for Thursday Night Football, Adam Schefter of ESPN reports.