The Chiefs have gone this route before, acquiring Joe Montana from the 49ers nearly 20 years ago, in April 1993, after he won four Super Bowls but gave way to Steve Young — San Francisco's quarterback of the future.
Not so different from Smith's situation last season behind second-year QB Colin Kaepernick.
Moving Smith was hardly unexpected. He realized it once Kaepernick emerged as a capable starter over the season's final two months, and Smith all but said goodbye with his first pro team when he played briefly in the regular-season finale against Arizona to cheers of "Let's Go, Alex!" and "Alex! Alex!" from the Candlestick Park crowd.
With Smith now headed for Kansas City, Matt Cassel is likely headed out of town. And Reid will enter his first draft as Chiefs coach in April no longer needing to search for a quarterback.
NFL.com reports that the Arizona Cardinals might be interested in Cassel: