* Trading at C$1.0015 to US$, or $0.9985 * Canada dollar lags Aussie, euro * IMF/EU clash over Greek debt undermines sentiment * Canada delays balanced-budget target by a year By Solarina Ho TORONTO, Nov 13 (Reuters) - The Canadian dollar nudged a three-month low against the greenback on Tuesday as market anxiety over the fate of aid for Greece hurt the value of assets considered risky. A public clash between Greece's international lenders over how Athens should bring its debts down to a sustainable level reignited fears that Europe's debt troubles could flare up anew. Euro zone finance ministers suggested that Greece, where the euro zone debt crisis began, should be given until 2022 to lower its debt to GDP ratio to 120 percent, but International Monetary Fund chief Christine Lagarde insisted the existing target of 2020 should remain, in an unusually public airing of disagreement. "Risk aversion is still very much driving the marketplace. That's coming out of Europe," said Gareth Sylvester, director at Klarity FX. "We're seeing a re-emergence of the Greek story once again ... The timing of the next tranche of EU/IMF funding is being delayed, so it creates uncertainty about Greece." At 3:02 p.m. EST (2002 GMT), Canada's dollar was at C$1.0015 to the U.S. dollar, or $0.9985. It closed on Monday at C$0.9995 versus the U.S. dollar, or $1.0005. The Canadian dollar was also underperforming other major currencies, including the euro and the Australian dollar. At one point it touched its weakest level against the U.S. dollar since Aug. 3. In Canada on Tuesday, the federal government pushed back its target for eliminating its budget deficit by a year to 2016-17, citing the impact of a weak global economy that has dampened prices for the country's exports of oil and other commodities. "The delay of one year in the return to balance, based in part on global risks, does not represent a significant departure from earlier plans, although it highlights the fiscal stance's continuing vulnerability to global risks," Peter Buchanan of CIBC World Markets wrote in a note to clients. Hopes for world economic recovery was also dampened by a recent raft of disappointing economic data from Germany. A survey on Tuesday showed sinking morale among analysts and investors in the region's top economy. "Germany has been the shining star of Europe, so it paints a very poor picture for Europe. I think that's dragging down sentiment," Sylvester said. The price of Canadian government debt rose across the curve, with the two-year bond climbing 2 Canadian cents to yield 1.075 percent. The benchmark 10-year bond was up 23 Canadian cents to yield 1.690 percent.