It was revealed Wednesday that the team was the Mavericks. The company controlled by Miriam Adelson, widow of casino magnate Sheldon Adelson, announced earlier Tuesday it was selling $2 billion of her shares to buy an unspecified professional sports team. Cuban would retain control of basketball operations in the deal. The agreement would be in the valuation range of $3.5 billion, according to a person who spoke to The Associated Press on condition of anonymity because that detail was not being made public. The deal could be completed in the coming weeks. Mark Cuban would retain control of basketball operations in the agreement with the Adelson and Dumont families.ĭallas Mavericks owner Mark Cuban has entered into an agreement to sell a majority stake in the NBA franchise to the family that runs the Las Vegas Sands casino company, it was announced Wednesday.