Plugged-in beat writer Mike Rodak of ESPN.com wrote this week that Buffalo "would like Brown to develop into one of their lead backs" as the resilient Jackson begins his age-33 campaign.
With Spiller and Jackson both entering contract years, planning for tomorrow makes plenty of sense.
Despite offensive coordinator Nathaniel Hackett insisting last summer that he would feed Spiller the ball "until he throws up," NFL Films guru Greg Cosell doesn't see the versatile runner as a traditional workhorse.
Brown remains a work in progress who already has more carries in the NFL (190) than he did in college (104), but his occasional flashes of brilliance suggest potential for a larger role.
The run-heavy Bills saw enough in his tape to make this trade, leaving Brown as a deep prospect in fantasy drafts.