The sale of the Dallas Mavericks from Mark Cuban to the Adelson and Dumont families was initially reported at a valuation of $3.5 billion, which was well below expectation for an NBA franchise in one of the biggest markets in the United States.

The deal, however, includes a financial pledge from the Las Vegas Sands Corporation to construct a new arena in Dallas, sources tell Marc Stein. When factoring in the arena construction costs, the valuation is expected to be between $4 billion and $5 billion.

Mark Cuban retains a 27 percent stake in the franchise and control of basketball operations as part of the deal.

Patrick Dumont will take over as governor of the Mavericks.