Jim Hacker without Sir Humphrey!
Seriously, I'll repeat that which I wrote on another thread. As far as I am aware (and I stand quite open to correction, no prob.) Turkey applied years ago to join the EU and no-one vetoed that application so it was accepted. It follows that no veto can, therefore, now be applied, unless they bring in a retrospective ruling. ALL Turkey has to do to gain full membership of the EU is to comply with the rules for admission, no-one can now veto them.
As I understand it they currently comply with all, bar about 10%, of the requirements. Granted that these are the 'sticking points' - things like 'Human Rights'. They are very near entry standard. Erdogan is moving in the opposite direction. BUT the EU is desperate over migrants and I.M.O. they will somehow 'ease' the regulations. Greece, main opponent, can be bought off with a promise to forgive their debts (and possibly Northern
Cyprus could also be a bargaining point).
I may be living in cloud-cuckoo-land, but I wouldn't be surprised.