Turkey will not be allowed to join. Same goes for Albania-Kosovo-Bosnia. All politics are local. Race/Identity politics is the bread-butter of almost all political parties (left - right and center) !
Like a third of the population of Albania, Kosovo and Bosnia is already working and living in the EU and believe me that it won't be a problem for the remaining ones to be made a part of the union. The Western Balkans are the next to join the EU even though there might be some problems in doing that as there are still some territorial disputes between the countries there. There is a similar case with South Cyprus though but they had no problem with making them a member state... only the Greek Part of course. Countries in the Western Balkans are too small, poor and easy to control to be a threath for the big economies in Western Europe- those who really control the Union. Eastern Europe is mostly a source of cheap labour force for the Western companies and a place where they sell their lower quality products and outsource some of the work thay can do for cheeper... and still I think it is great for those countries from Eastern Europe to be part EU as we can travel, work, study and settle in every part of Europe without a problem.
On the other hand Turkey is a growing economy and a big Muslim nation of around 80 million people, with strong military forces and a huge diaspora all around Europe, a country with huge potential (which is wasted because of the bad management of the country by a bunch of delusional and greedy people). Turkey is a country with important geostrategical location and ambitions to be a big player in this part of the World but let's forget the fact that we are Muslims for a second... Of course that Turks are hated by most Europeans (which makes me really happy because I know the reason
) but money and power have a bigger role here. Making Turkey a part of the EU means that automatically it will become one of the decision makers of the Union. Plus it will be a huge shock for the whole Union as millions of Turks will basically flood Europe in the scale of Poland, Romania, Bulgaria, Lithuania, Latvia, Hungary, Slovakia combined. Turkey will require hundreds of billions of euros to be spent by the EU which will be a huge burden for it's budget. Turkey as a huge market will be a place where a lot of companies can move their production, a country which can expand it's economic might easily in an open market like the EU. There isn't many people who are willing to share the Empire they have created and even to give it away to someone they are afraid of and who they think is a rival.
EU and Turkey can achieve a lot of things if they work together and if they try for once to be equal partners instead of enemies. For Turkey it will be always good to learn from and to work with the best (The Western World and Japan, Taiwan, South Korea, China- the places where inovations are created) instead of isolating itself from them for a fake friendship with a bunch of countries living in the 15th century. There isn't such a thing as Muslim Brotherhood, Ummah or whatever you call your fantasies. I see that a lot of Pakistanis and other Muslim people around here talk about how much Europeans hate us, how much they hate Muslims and etc. but aren't Christians and Westerners also hated in the Muslim world too, huh? Aren't muslims killing other muslims on a daily basis all around the globe? Tell us more about that.