Wed 11 Nov 2002Riverdeep chief's future may hinge on fate of bidRivverdeep chief executive Mr Barry O'Callaghan's future may depend on the fate of his management buyout bid for the company.Sources familiar with the company warned that the bid would have to value the company realistically."We do not have to accept a bid from Mr O'Callaghan or Mr O'Callaghan himself," said the source, who indicated there was concern at the way Mr O'Callaghan had highlighted recently that the company was the target of short selling.