The San Francisco 49ers are set to embark on an unusual three-week road trip after being kicked out of their stadium and practice facility because of strict new COVID-19 protocols in their home county.The Niners will fly to Arizona on Wednesday where they will practice, live and play their next two games after Santa Clara County imposed a three-week ban on games and practices for contact sports.The new rules that went into effect Monday and will last until at least Dec.