*Doubts arise over whether Italy will continue economic reforms. Treasury debt prices rose on Monday on concerns over protracted budget negotiations in Washington, political rumblings in Italy and expectations for further monetary policy easing by the Federal Reserve.
NEW YORK, Dec 10- U.S. stock index futures edged lower on Monday as investors awaited any sign of progress in talks to avert the United States' so-called fiscal cliff of tax hikes and spending cuts.
*Greece extends debt buyback offer to Dec. 11. ATHENS/ BRUSSELS, Dec 10- Greece extended its offer to buy back debt until Tuesday, seeking more bids from bondholders after falling short of a target to retire bonds worth 30 billion euros at a cost of just 10 billion euros.
BRUSSELS, Dec 10- Greece received a total of 26.5 billion euros in offers for its debt buyback at the close of business on Dec. 7, a senior euro zone official told Reuters on Monday.
*Greece extends debt buyback offer to Dec. 11. ATHENS, Dec 10- Greece has extended its offer to buy back debt until Tuesday, seeking more bids from bondholders after falling just short of a target to retire bonds worth 30 billion euros at a cost of just 10 billion euros.
ATHENS, Dec 10- Greece extended a debt buyback invitation that forms part of its international bailout for a day and a half to try to get more offers from bondholders, its debt agency said on Monday. In an offer that had been due to end on Friday, Athens aimed to buy back bonds with a face value of about 30 billion euros at deeply discounted prices.
LONDON, Dec 10- European stock index futures turned negative in early trading on Monday, with deepening political uncertainty in Italy and disappointing Chinese trade data hurting sentiment.
TOKYO, Dec 10- Japanese government bonds mostly firmed on Monday, with benchmark 10- year yields moving back towards a 9-1/ 2- year low hit last week on expectations for more monetary stimulus from the Bank of Japan.
At 0702 GMT, futures for Euro STOXX 50, Germany's DAX and France's CAC were flat to 0.1 percent higher.
ATHENS, Dec 10- Greece will extend a debt buyback that forms part of its international bailout for an extra day to receive additional offers from bondholders, a government official said on Monday. Athens plans to buy back bonds with a face value of about 30 billion euros at deeply discounted prices to lower its debt load.
*Doubts arise over whether Italy will continue economic reforms. Treasury debt prices were little changed on Monday as concerns over protracted budget negotiations in Washington were offset by investors pushing for price concessions ahead of $66 billion of debt sales this week.
Greece may ask for additional offers from bondholders in a debt buyback plan that forms part of its international bailout, Greek officials said on Sunday.
*Italy general elections now likely in February. MILAN, Dec 9- Prospects of a political crisis in Italy sooner than expected- after Prime Minister Mario Monti said he intends to resign early- are expected to drive up Rome's borrowing costs and tensions in the euro zone after months of calm on the bond market.
Athens plans to buy back bonds with a face value of about 30 billion euros at deeply discounted prices to lower its debt load. A Greek government official said on Saturday that Athens had received offers of about that sum.
ATHENS, Dec 8- Greek and foreign bondholders offered the targeted 30 billion euros in a debt buyback that is key to the country's international bailout, a Greek government official said on Saturday, suggesting the plan had broadly succeeded.
*Deal puts Enersis cap hike share price at 173 pesos. SANTIAGO, Dec 7- Spanish energy firm Endesa said on Friday its Latin American power unit Enersis will issue shares to raise $5.963 billion, a figure that ends a dispute with pension funds and indicates Chile's largest capital hike should be approved.
NEW YORK, Dec 7- U.S. The Labor Department reported that 146,000 jobs were created in November, contradicting forecasts for a sharp pull-back related to Superstorm Sandy.