Troika officials arrive in Greece today to try and pull that country's economic programme back on track.
Athens could be in conflict with the troika over its continued failure to meet reform targets under its €130bn bailout.
The Greek government needs to implement €11.7bn of spending cuts between 2013 and 2014, but there are concerns the timeframe is too short.
Reports in Der Spiegel newspaper at the weekend suggested that Greece will need €50bn in additional aid, adding that the IMF may refuse to contribute to that.