Sounds like he's a fair dinkum Aussie (played for their U 19's) so he should play for them if good enough.
We have enough imports with KP, Trott, Ballance, Prior, Stokes (ish)
I really don't think Joe Root is an opener, trouble is Carbs & Compo haven't really impressed and are both getting on a bit, is there anyone else on the circuit ?