Los Angeles Lakers governor Jeanie Buss is legally contesting her siblings’ plan to sell the family’s remaining 17.8% minority ownership stake in the team to Josh Kushner and Bob Iger, according to a letter obtained by The Associated Press.

Mark Walter is the majority owner of the Los Angeles Lakers after the NBA Board of Governors approved his purchase of a controlling stake from the Buss family.

The Buss family’s decision to sell a controlling stake in the Los Angeles Lakers at a franchise valuation of $10 billion marks the end of nearly a half-century when one of the most valuable properties in the entire sports world was run by an eccentric father and his sometimes squabbling children.