James White has won over Bill Belichick, quarterback Tom Brady and Co., with his steadiness and continued improvement, elevating from a player who was inactive in Super Bowl XLIX to becoming unquestionably the Patriots' go-to guy in the all-important "passing back" role. White played 30 snaps as a rookie in 2014; upped it to 290 in 2015; and played 425 last season.
As for 2017, White is one of three running backs who are considered locks to make the roster based on contract status, along with Mike Gillislee and Rex Burkhead. Lewis is also likely to be there, while second-year man D.J. Foster has also shown promise.
Coming off of an injury, Lewis played in 10 games last year, including the playoffs, and averaged 11.1 touches (8.9 carries, 2.2 catches) for 49 yards and 0.2 touchdowns, or 8.3 PPR fantasy points per game. He averaged 17.5 PPG in seven games in 2015, so his role was clearly reduced last year. White's role in the running game is minimal -- what's important is his role in the passing game after Lewis returned. In nine games without Lewis, White averaged 3.7 catches for 32 yards and 0.33 TD per game. After Lewis returned, White averaged 3.4 catches for 32 yards and 0.33 TD in the nine games leading up to the Super Bowl, so it appears that his passing down role remained mostly unchanged after Lewis returned. Of course, White had a huge performance in the Super Bowl, turning 20 touches (14 catches) into 139 yards and three touchdowns, and it appears that he's now entrenched as the passing down back. The Patriots don't seem inclined to give him as many carries as they would Lewis, though his 4.3 YPC in 2016 was an improvement. White is currently the 50th RB off the board in early MFL10s (PPR drafts), and he's a fantastic value in that format if this report that he has "seized" the passing down role is true. There’s always the chance that the Patriots turn back to Lewis if White gets a case of fumble-itis, but White should have enough leash to overcome a turnover or two.