A company owned by the family of Jared Kushner, U.S. President Donald Trump's son-in-law, stands to receive over $400 million from China's Anbang Insurance Group, that is investing in a Manhattan building owned by the Kushners, Bloomberg reported.

Details of the agreement are being circulated to attract additional investors, Bloomberg reported on Monday.

The building, a 41-floor tower located at 666 Fifth Avenue, was purchased by Kushner Companies in 2006 for $1.8 billion, which at the time was the highest sales price for a single building in Manhattan.

Deal: Jared Kushner, the president's advisor, was at his side at a cabinet meeting - while his family is on the verge of a $400 million deal

Not involved: Jared Kushner sold his take in the family firm to other family members in what was described as a move to avoid conflict of interest rows

The planned $4 billion transaction includes terms that some real estate experts consider unusually favorable for the Kushners, the Bloomberg report said.

'Kushner Companies is in active discussions around 666 5th Avenue, and nothing has been finalized,' spokesman James Yolles told Reuters via email.

Anbang could not immediately be reached for comment.

Reuters reported in January that the Chinese group was in talks to invest in a project to redevelop the New York City building.

Anbang, established in 2004 as an auto insurer, has emerged as one of China's most aggressive buyers of overseas assets in the past two years, spending more than $30 billion buying luxury hotels, insurers and other property assets.

Among its properties is the Waldorf-Astoria hotel in New York, which closed earlier this month for a complete renovation, which will turn parts of it into condos.

Every president had stayed there since Hoover, but after Anbang bought it, Obama took the unusual step of staying elsewhere over concerns about espionage.

Anbang's relationship to the Communist Chinese regime is sufficiently opaque to spark the concerns.

However the company says it is entirely transparent.