It better be a major/original character that dies or else that death scene is a f*cking cop out. And as much as I love Glenn, I hope its him because he's survived death so many times and it would be the most emotional for it to be him. I dont think it is though because there would have been much more hysterical screaming from Maggie's end but the screams were very tame.
They are not going to kill a female character like that so Michonne, Sasha, Maggie, and Susie Crabgrass are safe. They wont kill a kid/Carl or Rick. There's no point in killing a wounded person so Daryl is safe. It has to be G.I. Joe, the nerdy guy, Glenn or Aaron. I'm kinda betting on G.I. Joe
Edit: Also they are RUINING Carol for me. She became such a weak b*tch now. What happened to the strong woman who had no mercy and would do whatever it takes for the good of the people. Stop this pity party Carol killing is necesary in this kind of world. Its ok to kill to defend yourself