Many have been wondering when San Francisco 49ers superstar Christian McCaffrey will return from injury. Some believed the star playmaker could return as early as this Sunday's game against the Kansas City Chiefs. However, that won't happen, as McCaffrey remains on injured reserve, and the 49ers have yet to open his practice window. It seems likely that the 49ers will likely wait until after the bye week to begin ramping up McCaffrey's activity. They hope to have him available for the second half of the season.