Ron Burkle, the US supermarket magnate and head of the investment firm Yucaipa Companies, is one of the 10 Yahoo board members that Microsoft would try to eject if it wages a proxy fight at the web company’s next board meeting, reports DealBook. In an earlier report, DealBook said Microsoft, whose unsolicited bid for Yahoo has been rejected, plans to authorise a proxy contest with Yahoo this week. If Yahoo doesn’t quickly come to the table, Microsoft would then nominate a rival slate of directors and try to persuade Yahoo’s shareholders to vote out the entire 10-member board.