REUTERS/ Albert GeaMADRID, May 8 (Reuters) - Spain could pull the plug on its so-called "golden visa" scheme that grants residency rights to foreigners who invest in real estate in the country, according to the leader of a left-wing party negotiating the issue with the government. "Spanish citizenship cannot be bought," Errejon said, adding that golden visas had led to a "brutal" rise in housing prices and forced locals out of their neighbourhoods without creating any new jobs. Earlier on Monday, El Pais newspaper reported Spain was considering tougher requirements for golden visa applications. From the start of the golden visa scheme in 2013 until last November, Spain issued almost 5,000 permits, with Chinese investors leading the list, government figures show. Errejon said the visas represented a "backdoor privilege" for millionaires, turning Spain into a "sort of colony, often attracting dark money".

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