who is the little birdie negan talked about..

I don't remember Eugene being told that info. Could be Gregory because he is a snitch , or some of us who suspected Enid , could be right .

rumor is that it's Jadis. I hope not. Not that I like her character AT ALL, but I would hate for it turn out that way now that everyone has so much invested into working with them. To lose all the carnival guns, and just the complete betrayal of it,... I am more worried about how I will be feeling about Rick (being trusting enough to approach the junkyard people with a call to arms) if Jadis is the little birdy.
I'm hoping Negan is just talking trash because he figures Rick will eventually retaliate. I don't think that's what will happen.