UPDATE 1-Co-owner of Kushner's New York flagship property willing to sell
April 10, 2017 at 17:00 PM EDT
NEW YORK, April 10 (Reuters) - Efforts to breathe new life into an ageing Manhattan office building that is the flagship property of the family of President Donald Trump's son-in-law has gained a green light after a partial owner of the building indicated a willingness to sell.