NEW YORK (Reuters) – Sears Holdings Corp will ask a bankruptcy judge on Tuesday if it can proceed with liquidation after it could not reach an agreement on Chairman Edward Lampert’s $4.4 billion takeover bid, people familiar with the matter said, potentially spelling the end for the 126-year-old U.S. department store chain.

If Sears liquidates its assets, it would become one of the most high-profile victims in the wave of bankruptcies that has swept the retail sector in the last few years, as the explosion in online shopping exacerbates the fierce price competition facing brick-and-mortar stores.

In a stark contrast of the diverging fortunes of e-commerce firms and many physical retailers, Amazon.com Inc became the world’s most valuable company for the first time this week, reaching a market capitalization of close to $800 billion.

U.S. Bankruptcy Judge Robert Drain of the Southern District of New York, who is presiding over the case, could decide to give Lampert more time to improve his bid, the sources said. A bankruptcy auction for Sears’ assets is not due until Jan. 14.

The hearing that was set for Tuesday morning was delayed until the afternoon, a sign that Sears and Lampert were continuing to negotiate.

Sears, which filed for bankruptcy protection last October, may have to close some 500 stores it is still operating in a liquidation, potentially putting up to 68,000 people out of work, the sources said. Its vast inventories of tools, appliances and store fixtures will be sold in fire sales, the sources added.

The sources asked not to be identified because the matter is confidential. Representatives for Sears and Lampert offered no immediate comment.

PLAN FOR FEBRUARY AUCTION

Sears will now plan for a separate February auction of its assets and real estate, some of the sources said. Lampert, who also made a back-up offer for some of the assets as part of his initial $4.4 billion proposal, will make another bid, the sources added.

A main point of contention in the negotiations between Lampert and Sears centered on whether Lampert’s bid fully addressed the bankruptcy costs that Sears has racked up, some of the sources said.

The costs, which include bills from lawyers and financial advisers, are expected to exceed $200 million, those sources said.

Lampert’s bid proposed forgiving $1.3 billion of debt he holds in exchange for ownership of the reconstituted Sears, a bankruptcy maneuver known as a credit bid.

In addition, Lampert wanted a release from legal exposure related to a series of transactions he completed with the retailer before it filed for bankruptcy protection. Those made him the company’s biggest creditor, in addition to its largest shareholder.

Lampert’s offer did not include putting up cash to back the credit bid. That raised concerns in the negotiations since the maneuver might not be allowed in court, the sources said, given ongoing investigations of Lampert’s pre-bankruptcy deals, which the hedge fund manager maintains were proper.

Unsecured creditors have pushed for Sears to liquidate, partially because they contend they will realize a better financial recovery if it does. Those creditors, which include Sears landlords and bondholders, have also questioned Lampert’s pre-bankruptcy transactions with the retailer.

The liquidation of Sears, which includes discount chain Kmart, would follow a decade of revenue declines, hundreds of store closures, and years of deals by billionaire Lampert in an attempt to turn around the company he put together in 2005 through an $11 billion deal.

Sears dates back to the late 1880s and its mail-order catalogs with merchandise from toys, medicine, gramophones, automobiles, kit houses and tombstones made it the Amazon of its time.

The iconic retailer gradually lost its shine, however, as consumers turned to e-commerce and brick-and-mortar rivals such as Walmart Inc and Target Corp.

Lampert had pledged to restore Sears to its glory days, when it owned the tallest building in the world as well as a radio station and Allstate insurance.

But critics say Lampert let the stores deteriorate over the years, even as he bought the company’s stock and lent it money.

The largest U.S. toy retailer, Toys ‘R’ Us, tried to emerge from its 2017 bankruptcy filing but was also forced to liquidate six months later, after creditors lost confidence in its turnaround plan.