Durand seems more like Crossbones to me, but Grillo is also a solid choice (and perhaps not as obvious of one, which might be their intention). Surprised at this... I always thought an appearance by Mr. Bones was a long shot, but I guess not. Does this mean Diamondback is likely to show up too?
Casting for Marvel's NETFLIX shows:
Daredevil: Ryan Phillippe
Iron Fist: Philip Winchester
Luke Cage: Billy Brown
Jessica Jones: Michelle Monaghan
The Punisher: Holt McCallany