Kidwell lost his first choice assistant coach Steve MacNamara in June, when the former Warriors' assistant was snapped up by the Catalan Dragons.
His bid to get Stacey Jones on board was blocked by Stephen Kearney - who decided the former Kiwis halfback was needed at Mt Smart for the full pre-season - and they have lost a raft of players, including Tohu Harris and Kieran Foran to injury and the Tongan contingent led by Jason Taumalolo.
But the New Zealand Rugby League have a contingency plan, with David Kidwell identifying a preferred option to take over from Brennan if necessary.
The candidate had an assistant role at an NRL club last year and has previously been a head coach at NSW Cup level.
The Kiwis spent their first night at the marae on Tuesday night, in what would have been an eye-opening experience for the players, in more ways than one.
The team are all accommodated in one large room, on mattresses on the floor and some of the prime snoring culprits have already apparently been identified.
The team has training and community activities on Wednesday and Thursday, before travelling to Auckland on Friday to continue their preparations.