This is from ROTOEXPERTS Draft Analysis:

Green Bay Packers: Jamaal Williams, RB – I love this kid, and I love this spot. Williams was my fifth ranked running back, and it’s because he knows what it takes to be a NFL running back. Williams has the best vision of the draft, lets holes develop or finds his own and has a terrific lower half. Williams also has high-end acceleration with that power and what I call “Madden button moves” (spin, juke, truck, stutter step). Ty Montgomery won’t away completely, and Williams might take a few weeks to gain full control of the backfield (like Jordan Howard last year), but he will produce weekly RB1 numbers at some point of the 2017 season.