Gerard Beale, Josh Hoffman and Jeremy Smith have been added to the Kiwis train-on squad after their sides were knocked out of the NRL playoffs last weekend.
The trio join the 11 players already named - Roosters centre Shaun Kenny-Dowall has had to withdraw because he needs surgery on an adductor tendon - to prepare for the test against Australia in Townsville on October 13.
Beale and Hoffman were part of the Kiwis team who took on Australia in April's Anzac day test and Smith has accumulated 23 tests in his international career.
Brisbane utility Alex Glenn was unavailable because of impending knee surgery.
The selectors of Richie Barnett, Tony Iro, Stephen Kearney and Tawera Nikau will add to the squad as teams are eliminated from the NRL finals.
Kiwis train-on squad: Gerard Beale, Josh Hoffman (both Brisbane), Jeremy Smith (Cronulla), Sam McKendry (Penrith), Jared Waerea-Hargreaves (Roosters), Ben Henry, Shaun Johnson, Simon Mannering, Alehana Mara, Ben Matulino, Elijah Taylor, Manu Vatuvei (all Warriors), Adam Blair, Benji Marshall (both Wests Tigers).
Unavailable: Alex Glenn (knee), Nathan Fien (retired), Jason Nightingale (knee), Shaun Kenny-Dowall (thigh), Kevin Locke (ankle).