This thesis aims at answering two research questions at the topic of Reshaping the Future of the European Union. The questions are: Will the future of the European Union be flexible? and if so, Which model will be the most suitable one?. To answer these questions flexibility is analyzed through the context that necessitates its usage, its earlier and recent models, its evolution at the official realm, and the institutional and country views on it chapters. At the end of this analysis, this thesis&amp / #8217 / answer to the first question is: Yes, although there is quite skepticism against the term flexibility at almost every realm of the Union / its gradual evolution at all dimensions of the Union shows that this term would continue to develop and has a chance to become the main ruling mechanism at the future. The answer of the second question is: a modified Variable Geometry in addition to the introduction of radical comprehensive structural changes would be the most sufficient future flexible model of integration at the future.