German Finance Minister Wolfgang Schaeuble ruled out public investors accepting a debt restructuring, or "haircut", on their Greek debt holding but said a debt repurchasing programme could be considered.
"(A haircut) is a discussion that has little to do with the reality in the member states of the euro zone," Schaeuble said in an interview to be aired on Deutschlandfunk radio on Sunday.
Schaeuble added he would not speculate on a debt repurchase programme until the troika of the European Central Bank, European Commission and International Monetary Fund had presented their final report on Greece's progress.
"That is a consideration that one can make seriously. It has been put up for discussion by some members of the central bank board."
(Reporting by Annika Breidthardt; Editing by Helen Massy-Beresford)