I guess we'll find out soon enough if Terzić is staying. He says he's still motivated to continue, but at the same time he's fully aware that most of "his" players are on their way out and that perhaps the new crop of players coming in would work better with another coach who could build a new team from the scratch. He'll announce his decision shortly, but if he does step down, he has no idea who will succeed him and by the look of things, it won't be anyone from his circle.
There have been a lot of interviews with him lately and it's obvious how much he's mellowed down over the years (as indicated in the (in)famous "You're the best team in the world for me, screw them" timeout, which would have NEVER happened 10 years ago). And most of them have a certain melancholic undertone to them, which could indeed mean the end is near.
Also, he clearly says Italy is the best European team at the moment (even though it may anger his players or the Turks ) because they have the most depth and we clearly lack someone like Pietrini who he admires a lot.