A wild NFL offseason of potentialquarterback movement started out with a bang when the Rams and Lions agreed to trade their starting pa sers in 2021.Matthew Stafford is headed west to play for Sean McVay in Los Angeles, while Jared Goff shipsout to Detroit to operate under new head coach Dan Campbell. The deal won't go into effect until the new NFL year starts on March 17, but it sets an early...