assistant billionaire real estate developer macau accuse engage scheme pay bribe former unite nations general assembly president plea talk lawyer say tuesday negotiations involve jeff yin arrest along billionaire ng lap seng 2015 disclose letter file manhattan federal court attorney say prosecutors extend plea offer lawyer sabrina shroff seek extend court deadlines yin 31 could consider plea offer complex involve civil tax assessments liabilities accord letter plea talk come ahead jury trial schedule may 15 yin boss could face substantial prison time convict unclear charge yin would plead guilty accept offer face bribery money launder tax-related charge also accuse violate u.s. foreign corrupt practice act shroff decline comment u.s. attorney office manhattan pursue case also decline comment ng link campaign fundraise investigation former u.s. president bill clinton administration one seven individuals charge since october 2015 u.n.-related probe prosecutors accuse ng yin pay 500,000 bribe john ashe former u.n. ambassador antigua barbuda serve general assembly president 2013 2014. ashe die june await trial indictment say ng yin also pay bribe francis lorenzo then-deputy u.n. ambassador dominican republic plead guilty march 2016 bribery money launder charge part deal cooperate probe main goal bribe accord indictment ambassadors take step help obtain unite nations support multibillion-dollar u.n.-backed conference center macau sun kian ip group would develop yin u.s. citizen currently live california also face charge take step evade pay income tax help lorenzo conceal portion income u.s. tax authorities ng founder macau-based real estate developer sun kian ip group deny wrongdoing lawyer ng decline comment macau billionaire 's aide plea talk u.n. bribe case