Mark Cuban will retain roughly a 25 percent ownership stake in the Dallas Mavericks following his sale to the Adelson and Dumont families. 

The Mavericks are valued by Sportico at $4.03 billion, but Cuban sold the stake in the franchise at a $3.5 billion valuation. 

The new owners of the Mavericks are hoping to lobby Texas to legalize gambling within the state and then build a new arena attached to a hotel and casino in Dallas.

As part of the unconventional deal, Cuban reportedly will run the basketball operations of the franchise "forevermore."