Greek banks have 1 billion euro liquidity - association

ATHENS (Reuters) - Greek banks have a "liquidity cushion" of 1 billion euros but funds beyond Monday depend on the European Central Bank, the head of Greece's banking association said on Friday.

Greeks banks were shuttered on Monday for a week after the collapse of negotiations on a new aid deal to keep the country afloat, triggered by a government decision to call a referendum on the bailout terms.