Three Scarlets boys have a chance in Josh Turnbull, Ken Owens and George North (if he's recovered). Ken Owens has slipped down the pecking order though, as he's simply not getting enough gametime with the Scarlets, whilst the likes of Rhys Thomas and Bennett have stepped things up a couple of notches.
I don't think North has much chance of a cap though. If he returns very soon, he might get into the squad for development purposes, but getting onto the pitch is a bit of a stretch.
I'm personally hoping Turnbull get's a shot, as I think he could feature well for is even as close as the world cup. Lydiate is also going well, as is McCusker, so three youngsters all vying for spots. Trunbull probably has a bit more mongrel than the other two though, something which the Welsh team lacks.