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This is primarily ensured by the permanent holding of the nationality of the country of the national association in question[6]. It means that nationality must not be pegged to the residence of the player in a certain country[7]. Naturally, sanctions may apply in the case of a breach of these stipulations[8].
In order for Durante to play for NZ, his nationality was pegged to residence in NZ for him to be eligible - after 5 years residence, he becomes an NZer. That line there says he didn't have to....
I believe that some countries grant citizenship based on owning property or residing in the country - as distinguished from "the permanent holding of the nationality of the country." They would lose that nationality if they moved overseas or sold their property in that country.
e.g. I was born in NZ and have NZ nationality. I would continue to do so even if I lived the rest of my life overseas.
Andrew Durante, now that he has NZ citizenship could up sticks and live overseas if he wanted and still retain his NZ citizenship. It doesn't matter that he acquired it through satisfying the five year residential rule.