‘Indeed, when Preston was drafted in the fourth round (122nd overall), he was tabbed the Bills “center of the future.” Apparently it’s the distant future. The Bills signed Melvin Fowler from the Minnesota Vikings to play center and again have Preston lining up at right guard. “He played center most of his career, but we’re giving him a lot of reps at right guard,” offensive line coach Jim McNally said. “Chris Villarrial (the starter at right guard) has played 10, 11, 12 years, whatever it is (it’s 11), so we want to be able to give him a little rest now and then.”‘