The Adelson family has had advanced discussions about buying a significant share of the Dallas Mavericks, sources told ESPN.

Mark Cuban would remain governor of the franchise and in control of all basketball decisions, according to sources.

The agreement would be in the valuation range of $3.5 billion and take weeks for the league to process, The Associated Press reported, citing a person with knowledge of the talks.

The filing identified Miriam Adelson, a medical doctor and widow of casino magnate Sheldon Adelson, and the Miriam Adelson Trust as sellers, but it didn’t specify a team, league or location.

If the entirety of the $2 billion goes toward the purchase, it would mean the Adelson family could be acquiring at least 57% of the NBA team — based on the $3.5 billion valuation.