The Buffalo Bills currently have nine defensive ends on the roster. Two of those players are listed as linebackers, but we know that they function more as ends than they do linebackers. One of those defensive ends has actually been an outside linebacker in a 3-4 front for his career, so he’s slotting into a new role, as well.
Of the nine “edge” players, I could make a solid case for six of them to make the final roster, with a seventh as a dark-horse candidate based on a small sample last year. I also don’t think that the team can justify keeping six defensive ends on their 53-man roster given the needs they’ll have at other positions.