Rising backrow star Isi Naisarani has been unveiled as the final piece of the Wallabies’ Spring Tour puzzle, named as a squad development player.

Rugby.com.au reports, Naisarani has been training as an unofficial member of the squad in Japan and his efforts have impressed the coaching staff enough to earn a spot alongside fellow development rookie Rob Valetini in the squad.

Hooker Tatafu Polota-Nau is the other addition to the squad once they land in the UK, with Wallabies coach Michael Cheika giving the rake some time off in England while the squad trained in Japan.

The Wallabies flew to Wales on Saturday ahead of their November 11 Test in Cardiff.