Two years ago
ESPN article on NBA players investing in NBL
Very positive article on ESPN's American site about former NBA players investing in the NBL.
Says that NBA players are attracted to the NBL as they see it as a "mini NBA" and the article reports that the bullets sale to Kevin Martin valued the franchise at around $9-10 million.
The article also said that Kevin Durant was seriously considering buying Brisbane and remains interested in a future NBL investment.