Ms. Lowenstein said that tax-exempt financing is the largest component of the Yankees' subsidy package.

In November, the developer got a $49.6 million subsidy package from the city, to the annoyance of the owners of 580 Fifth and other landlords.

Similar subsidy packages have been given to 15 other solar- and wind-power electric plants since 2009.

Real estate experts say the board is also trying to preserve a claim on the old $98.5 million subsidy package.

The next step is for producers and theater owners to decide what kind of subsidy package they might offer.

"We have seen no evidence of any subsidy package," he said.

An $8.8 billion Government subsidy package approved by the European Union last year failed to rescue the state-owned banking giant.

Many real estate executives regard those talks as a bargaining tactic to increase pressure on New York officials to come up with a larger subsidy package.

City officials, who provided the bank with a subsidy package, had hoped the new tower would mark the establishment of a new office district.

The subsidy package, however, is portable and can be used at a site near Times Square or in Battery Park City.