Private creditors said on Sunday they had come to the limits of what losses they could concede in a Greek debt swap, putting the ball in the court of the EU and the IMF in a tense race against the clock to avoid a messy default. Uncertainty over the outcome of Greek talks could also provide a favorable backdrop for the sale of French and German treasury bills. "I don't expect any problems getting them away, because they are short-term," Michael Hewson, market analyst at CMC Markets said. "Everyone knows that unless there is a restructuring of the Greek economy, we can have 100 percent haircut, it won't change a thing." The German Bund future rose 19 ticks to 138.31, having fallen in the previous week. After several rounds of talks, Greece and its private creditors are converging on a debt swap deal that would stave off bankruptcy for Athens, with investors shouldering losses of up to 70 percent. But some details were still unresolved. "We see chances for a temporary rebound in Bunds today and install a tactical long," Commerzbank said in a research note.