Jeanie Buss Fighting Family Sale of Remaining Lakers Ownership Stake

3:30 PM -- Not so fast -- Jeanie Buss' attorney just fired back with a letter to her siblings' legal teams ... stating the sale CANNOT happen.

In the letter, Adam Streisand cited a court order that states a sale can't be made without Jeanie's approval ... making the vote that was reported on Monday "void." It also stated Jeanie must remain the Lakers' owner for life.

"On behalf of Jeanie Buss, I demand that your clients make clear publicly that Jeanie Buss is the Controlling Owner of the Los Angeles Lakers and that your clients shall take no action on this supposed 'vote' to sell the 17.8% stake," Streisand wrote, according to CNBC.

He also accused Joey and Jesse of feeding Shams Charania bad info maliciously ... claiming they have a "years-long pattern" of doing so.

It truly is a new era for the Los Angeles Lakers -- the Buss family has sold its remaining 17.8% stake in the team to Bob Iger and Josh Kushner.

According to Shams Charania, the Buss family trust, which consists of Jeanie, Jim, Johnny, Jamie, Joey and Jesse, recently received the necessary votes to push the sale through.

As a result of the transaction, Jeanie will no longer serve as governor of the Lakers, as at least 15-percent ownership is required to hold the position.

The Busses released a statement on the decision on Monday ... saying, "We have decided as a family to sell the remaining Buss Family Trust shares to the Bob Iger group as part of the ongoing transaction."

"We love the Lakers, Laker fans and will continue to support Los Angeles; but it is time to use this opportunity to move on and exit gracefully while we still can."

The Buss fam initially sold the majority stake to Mark Walter for $10 billion in 2025 ... and just last week, he pocketed $2.5 billion by handing the keys over to Iger and Kushner.

Based on the valuation the Lakers sold for last week, the Buss family's stake would be worth $2.225 billion.