Once again this debt will never be paid, they are just buying time. As a sovereign state Greece has the ability to cancel any of this whenever they like. It's not done until the collateral is sold and Greece accepts it. At the first sign of the inevitable Greek backpedaling this agreement is over and Greece is once more in crisis mode.
Greece will continue to be in crisis mode even with the last help in money. IMF told that without a reconstruction of the debt the Greece will not be able to pay his debt. So all the other credits given by everyone will facilitate the situation but never will resolve that. The problem is that Tsipras with his politic and demagogie in all that 5-6 months in power are deteriorated badly the economic situation and the needed credits or helps must be more consistent and must serious. No one can predict how will finish this situation. There are to many imprevedible conditions that can happen. Let's hope that the consequences don't fall to the most poor people.
They will not be able to pay it, unless the debt is crossed over. Some commenters do not see that in both cases, debt crossed over or debt not crossed over, the debt will not be paid. If you think the problem for the creditors will be solved either way, you are in danger of incurring cognitive dissonance in yourself.
And if you think that the creditors can take the hit, think of who the real creditors, when everything is cleared out, is: It is the public, and they have to pay through higher taxes, or lower profit from interest on savings (pensions), or through inflation.
And with inflation I mean stagflation. This time it will be stagflation, because the capital structure is now not well adapted to demand.