▁the ▁arrang ements ▁for ▁withdraw al , ▁including ▁a ▁framework ▁for ▁the ▁State ' s ▁future ▁relationship ▁with ▁the ▁Union , ▁negoti ated ▁in ▁accord ance ▁with ▁Article ▁ 2 1 8 ( 3 ) ▁of ▁the ▁Tre aty ▁on ▁the ▁Function ing ▁of ▁the ▁European ▁Union . ▁The ▁agreement ▁is ▁to ▁be ▁approved ▁by ▁the ▁Council , ▁acting ▁by ▁qualified ▁majority , ▁after ▁obtain ing ▁the ▁consent ▁of ▁the ▁European ▁Parliament . ▁Should ▁a ▁former ▁Member ▁State ▁seek ▁to ▁re join ▁the ▁European ▁Union , ▁it ▁would ▁be ▁subject ▁to ▁the ▁same ▁conditions ▁as ▁any ▁other ▁applic ant ▁country . ▁ ▁Rem aining ▁members ▁of ▁the ▁EU ▁would ▁need ▁to ▁manage ▁consequ ential ▁changes ▁over ▁the ▁EU ' s ▁bud gets , ▁voting ▁alloc ations ▁and ▁policies ▁brought ▁about ▁by ▁the ▁withdraw al ▁of ▁any ▁member ▁state . ▁ ▁Fail ure ▁of ▁negoti ations ▁This ▁system ▁provides ▁for ▁a ▁negoti ated ▁withdraw al , ▁rather ▁than ▁an ▁ab rupt ▁exit ▁from ▁the ▁Union . ▁This ▁preference ▁for ▁a ▁negoti ated ▁withdraw al ▁is ▁based ▁on ▁the ▁expected ▁complex ities ▁of ▁leaving ▁the ▁EU ▁( including ▁concerning ▁the ▁euro ) ▁when ▁so ▁much ▁European ▁law ▁is ▁cod ified ▁in ▁member ▁states ' ▁laws . ▁However , ▁the ▁process ▁of ▁Article ▁ 5 0 ▁also ▁includes ▁a ▁strong ▁imp lication ▁of ▁un il ater al ▁right ▁to ▁withdraw . ▁This ▁is ▁through ▁the ▁fact ▁the ▁state ▁would ▁decide ▁" in ▁accord ance ▁with ▁its ▁own ▁constitution al ▁requirements " ▁and ▁that ▁the ▁end ▁of