Looking at transfermarkt, it has these notable Kiwi's coming off contract this year:
Smith - Dec 2019
Rojas - Dec 2019 (contract option)
Barbarouses - May 2019
Marinovic - Jun 2019
M Boxall - Dec 2019
Wynne - Dec 2019
Tuiloma - Dec 2019 (contract option)
Collier - Dec 2019
Musa - Nov 2019
Brotherton - Nov 2019
Blake - May 2019
Kirwan - Jun 2019 (contract option)
Dyer - Dec 2019
J Ingham - May 2019
den Heijer - Jun 2019 (contract option)
Zwetsloot - Jun 2019
Crocombe - Jun 2019
Stanger - May 2019
Looking at transfermarkt, it has these notable Kiwi's coming off contract this season:
Smith - Dec 2019
Rojas - Dec 2019 (contract option)
Barbarouses - May 2019
Marinovic - Jun 2019
M Boxall - Dec 2019
Wynne - Dec 2019
Tuiloma - Dec 2019 (contract option)
Collier - Dec 2019
Musa - Nov 2019
Brotherton - Nov 2019
Blake - May 2019
Kirwan - Jun 2019 (contract option)
Dyer - Dec 2019
J Ingham - May 2019
den Heijer - Jun 2019 (contract option)
Zwetsloot - Jun 2019
Crocombe - Jun 2019
Stanger - May 2019