2 Min Read BERLIN (Reuters) - European broadcaster RTL confirmed on Friday it was exploring the sale of its controlling stake in French broadcaster Groupe M6, as it reported a 26% slide in annual core profit due to the coronavirus pandemic. FILE PHOTO: German media group Bertelsmann CEO Thomas Rabe arrives for the annual news conference in Berlin, Germany, March 28, 2017. REUTERS/Hannibal Hanschke/File Photo Chief Executive Thomas Rabe said he saw a strong case for consolidation in the European media industry - in particular for in-country TV merger deals - as U.S. streaming giants increasingly capture the attention of viewers.