Schaeuble also said he expects the IMF to participate in a third bailout package for Greece after German magazine Der Spiegel said the Fund would contribute up to 5 billion euros ($5.3 billion). The IMF declined to comment.
"I assume it will," Schaeuble said when asked about the IMF's participation. He noted the IMF had said in 2015 it would participate if Greece fulfils its reform targets. "I assume that can be achieved in the coming weeks."
It remains unclear whether the Fund will be involved in the programme, and this is likely to be one of the main talking points when Chancellor Angela Merkel and IMF Managing Director Christine Lagarde meet on Wednesday.
Germany's government, gearing up for what is forecast to be a tight national election in September, opposes debt relief for
Greece as sought by the IMF. Still, Berlin says the current programme can only continue if the Fund joins in.