Yes, I know that, but as he has stated he feels Australian, wouldn't he have to play in Oz to be eligible for WBsWell here's the thing … it wouldn't be 'back to Oz' because AFAIK, he's never lived there for any extended period of time. He was born in Italy but has spent the significant majority of his life living in England since his dad joined Saracens in 1996.
He's unquestionably a product of the Quins academy and English rugby and has already played all of his age-grade rugby for England, so if anything it would be a 'jump' to Australia rather than vice versa.
I think he's said he 'feels' Australian so it may be that he doesn't want to tie himself to England which is fair enough, but it'll be interesting to see what he does if he's actually given a call up.