49ers to send Smith to Kansas City, source says

San Francisco 49ers quarterback Alex Smith passed against the Seattle Seahawks during the second quarter in San Francisco on Oct. 18, 2012. A person with knowledge of the trade tells The Associated Press that the Kansas City Chiefs have agreed to acquire Smith from San Francisco. The person spoke on condition of anonymity today, because the trade does not become official until March 12, when the NFL's new business year begins.