TPM "WaPo: FBI Informant Is Ex-Professor Who Met With Three Trump Campaign Aides"
https://talkingpointsmemo.com/livewire/fbi-informant-retired-professor-met-three-trump-campaign-aides
The unnamed FBI source that President Donald Trump hopes to hunt down reportedly met with another Trump campaign adviser as a government informant in 2016.
The Washington Post reported Friday that in addition to Trump campaign advisers Carter Page and George Papadopoulos, which the New York Times first reported Wednesday, the FBI informant also met with campaign co-chairman Sam Clovis.
The informant reportedly met Clovis for coffee in Northern Virginia in the summer of 2016 and offered to provide foreign policy expertise to the Trump campaign.
Described by WaPo as a retired American professor and a longtime U.S. intelligence source, the FBI informant began working for the agency as it investigated Russias interference in the campaign and aided the Russia investigation both before and after special counsel Robert S. Mueller IIIs appointment in May 2017, people familiar with his activities said.
snip - read the rest at the above link