[FDP chairman Lindner addresses the media in Berlin]Greece should leave the euro zone and then be given debt relief, the head of Germany's pro-business Free Democrats (FDP) told a German radio station on Thursday. Greece should, however, remain in the European Union, FDP leader Christian Lindner told Deutschlandfunk, so it can get subsidies to put into infrastructure or help small- and medium-sized businesses. "It's clear that Greece needs to have its debts written off," Lindner said.