Does the EU want Ukraine ? It’s pretty poor and hugely corrupt? I’m not 100% sure how the EU works so it might not be a big deal
For a state to join the European Union, the prior approval of all current member states is required.
This might be large barrier to entry because there are several provisions a candidate nation must fulfill. Functioning democracy, rule of law and recognition of minority rights amongst others.
Given that Ukraine’s democracy is questionable and is in open conflict with ethnic Russians in the Donbass region it may not be possible for all EU member nations to agree on its entry.
I may be wrong but I don’t remember the EU accepting a nation which has a long-running open armed conflict, as is the case in Eastern Ukraine.