There is no overlap between the maximum of possible Turkish concessions and the minimum of acceptable Kurdish demands.If an agreement comes about, it will unavoidably be short lived, regardless how much foreign powers may wish it as a precondition to their regional designs. The conservative right from either side will not let it be implemented, with the Turkish right being the least patient and most threatened and therefore the one expected to act first, also implicating the Kurdish right via propaganda or incitement or both, in traditional deep state ways.
It is beyond impressive how the various experts and international press underestimate the dynamics of latent, and not so latent, unhealthy Turkish nationalism ingrained in the majority of ethnic Turks. One hundred years of state feeding the ultra nationalist sentiment cannot be stricken in a few months or years just because the caliph in-the-making so desires and issues a firman.
Last but not least, Kurdish awareness has grown way out of its infancy stage. It is advanced and more healthy than the Turkish nationalists' worldview who see their perfect all Turkish world under threat. No matter how things develop, Kurds stand to gain. They know it, thus they also have the luxury to stay calm the longer.
