There's a few positions with the Bills that fall into that auspice where they look for those types of players that many other teams wouldn't have a scheme fit for. The base nickel with two rangy LB's, where as you alluded to with Magee (or Ulofoshio or Jacobs - the latter a true 4-year Senior, similar profiles) would be a solid get. Also the Bills have been known to turn big safeties into LB's and I've been wondering about Jaylon Carlies for that.
Had an eye on Javontae Jean-Baptiste in that mid day-3 range, 7th round grade from Brugler but there's a bit of buzz lately. Then there's the RAS monsters at Texas Tech, Myles Cole whose physical profile is basically Greg Rousseau, a freakishly long edge type. Very boom-bust as his technique is negligible and needs coached up, but the tools are rare and worth a mid-late Day 3. Same with Tyler Owens, big, fast, explosive, profiles sorta like Jeremy Chinn.