SAN ANTONIO - A former financial adviser to retired Spurs star Tim Duncan was sentenced to four years in prison on Wednesday for defrauding him of millions

The judge also ordered 49-year-old Charles Banks IV to pay $7.5 million restitution and remain on supervised release for three years after his prison sentence is served.

In April, Banks pleaded guilty to two counts of wire fraud. The U.S. Attorney's Office said by pleading guilty, Banks admittedly manipulated Duncan into guaranteeing Gameday's $6 million debt by misrepresenting the true nature of the transaction.

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