Other private equity firms such as JC Flowers,Apollo Management and the Carlyle Group, also may be interested in Neuberger because it is one of the premier money management firms in the business.
But potential buyers have been balking at Lehman's terms. The firm valued the investment-management division at around $10 billion and was looking to sell a 70% chunk, with an option to buy back the rest at a later date.
Watch Gasparino's report on video at left.
In addition, Lehman was offering the buyer an option to buy a piece of Lehman at some later date persumably when the stock recovers
It's unclear if the initial terms of the deal have dramatically changed.
Lehman is scheduled to report third quarter results sometime in September, and according to analysts, the results won't look pretty.
The firm is expected to announce additional losses and writedowns because of the soured commerical real estate and subprime debt on its books.
In recent weeks, shares of Lehman have been pounded as the commercial shops a sale of the depressed assets to clean up its balance sheet, and the money making Neuberger to give the firm additional capital.
Most analysts believe that the firm cannot issue more stock to raise capital because of the firm's shakey finances.
CEO Fuld has also held talks with sovereign wealth funds to make a major investment in Lehman, and some analysts have suggested that Fuld might sell the firm outright.
So far none of those options have panned out, alrgely because of the uncertainty surrounding Lehman's future, which has many analysts predicting that a sale of all or part of the investment management business may be the only way the firm can raise capital and survive.
A spokeswoman for Lehman had no comment.