Former Port Adelaide cult hero Donald Dickie has made a $40million sale of his National Disability Insurance Scheme (NDIS) business in a remarkable career move.

His business National Disability Supports Partners (NDSP) was bought on Tuesday by My Plan Manager (MPM) with the deal making the Adelaide-based business the biggest NDIS plan manager in the country, with News Corp reporting the sale falling close to $40 million.

Dickie established NDSP in 2017 with business partner Lisa Theoharris, and today celebrates the major deal.

The former Port Adelaide livewire played 55 games for the Power, including the first-ever showdown with the Adelaide Crows.

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Dickie retired at the end of 2000, having spent four years in the AFL system. His best year came in 1998 when he finished second in Port Adelaide's best and fairest.

In five years Dickie was able to grow NDSP into a national company and the third-largest NDIS plan management provider in Australia.

The deal makes Dickie, presumably, one of the richest men to come out of AFL football.