By Emma Pinedo, Inti Landauro * Bidders say PRISA shareholders could keep stakes * Herrero and partners did not reveal worth of bid * New stories mentioned Herrero would offer around 200 mln euros * PRISA shares surged 15{b84e1aa8c29d58b2a8c9372c42385ab668ba841c03c857d88799274ff7fb2c65} immediately after it verified bid (Recasts with PRISA statement) MADRID, Nov […]