Niners GM says Christian McCaffrey 'doing incredibly well'

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San Francisco 49ers general manager John Lynch said star running back Christian McCaffrey continues to make progress but there is still no timeline for his season debut.

McCaffrey, the reigning NFL Offensive Player of the Year, is dealing with Achilles tendinitis in both legs and has been on injured reserve since Sept. 14.

"No new updates other than he's doing incredibly well,