Greece growth projections will need to be "significantly" revised down as the country's debt negotiations with its creditors drag on, the IMF warned.
European markets closed sharply lower on Friday, pressured by Chinese futures and mounting tensions over Greece debt negotiations.
U.S. stock index futures pointed to a lower open on Wall Street on Friday, as investors eyed declines in overseas markets and looked at inflation data that could influence Federal Reserve policy on interest rates.
Greece is bankrupt and should default, well-known investor Marc Faber told CNBC Friday, arguing that a "geopolitical game of chess" was being played.
European equities closed lower on Thursday after mixed first-quarter earnings reports and as Greece's economic outlook deteriorated further.
European equities closed higher on Wednesday, unchanged after the European Central Bank (ECB) announced its monetary policy decision.
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