Amy Trask told the San Francisco Chronicle late Saturday that despite speculation Davis' wife Carol and son Mark would sell the team, that's not the case.
"The team will remain in the Davis family," she told the newspaper. "There is a succession plan in place in that regard," she said, adding there is "a good structure in place."
Al Davis, whose death at age 82 was announced Saturday, reduced his ownership percentage from 67 to 47 percent in 2007 following a deal with David Abrams, but he did not surrender controlling interest, the newspaper said.
Speculation had been fueled due to comments Al Davis made in 2008, when he said his son Mark, 56, didn't want to get too involved in the football side of the business.
"He's business and perhaps he's doing some work on the stadium -- business and stadium. He doesn't want to get involved in football. He used to know all the players. He still does," Davis said at the time.
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