Eurogroup chief Jeroen Dijsselbloem appeared relatively upbeat ahead of discussions Friday on Greece's 85 billion euro third bailout deal.
Speaking to reporters before a meeting of euro area finance ministers in Brussels, the Dutch finance minister said the talks "won't be short."
"The MoU is a very extensive document, as you have seen, with major reforms. There will be questions, there will be criticism, perhaps issues that will have to be clarified or improved," he said. However, the Dutch official added: "Hopefully, by the end of the evening, we will have a positive outcome."
In the same comments, Dijsselbloem said that Greece's "debt sustainability" remained a serious concern for both the eurogroup and the IMF.
"Debt sustainability is certainly a major point of concern, certainly for the IMF. The IMF will also look at that and we will look at it closely in October and hopefully we can make sure that it is sustainable by then and give further guarantees, if necessary, so that the IMF can come on board in October," he said.
"The IMF won't decide before October. I think we will hear today that the IMF is positive about the package."