The Greek finance minister says his country may seek to ease its debt burden by re-negotiating its bailout terms.
Yannis Stournaras says this could involve lower interest payments and more time to repay €240 billion in loans.
The BBC reports speculation over Athens' borrowing needs comes at a sensitive time, with German elections due in September.
Earlier this month German finance minister Wolfgang Schaeuble said Greece would need another bailout to plug a forthcoming funding gap.
The Greek bailout remains a sensitive topic in Germany.
Chancellor Angela Merkel is seeking re-election next month and many German voters feel they have already contributed enough to European bailouts.