This is actually a name that has been floating out there for quite some time:
Victor Cha
The Trump administration plans to name a Washington-based academic and former White House official, Victor Cha, as the next US ambassador to South Korea, an administration official said on Tuesday.
Cha is a former director for Asian affairs on the White House National Security Council and served as deputy head of the US delegation in multilateral talks with North Korea over its nuclear program during the administration of President George W. Bush.
An administration official said he expected the appointment, which will be subject to a Senate confirmation hearing, to be announced “soon,” and added that it had “been in the works for a long time.” [Business Insider]