There has been two major developments today showing that withdrawal and expulsion from the European Union EU and Economic and Monetary Union EMU is being more seriously elaborated on in EU official circles. First one of these developments is the withdrawal right from the EU which has become a part of the Acquis Communautaire with the new Lisbon Treaty; the second development is EMU facing a serious economic crisis due to a possible Greek default on its sovereign debt after being hit by the 2008 global financial crisis. According to the withdrawal right outlined in article 50 of the Consolidated version of the Lisbon Treaty it is possible that potential bizzare and different scenarios are possible. The first scenario implies that a member state decided to withdraw from the EU, might opt for an agreement where it prefers to stay at least for a while in the EMU. Hereby it seems feasible that a withdrawing state from the EU can theoretically continue to use euro. The second scenario implies that according to a agreement in line with the Treaty, a member state can withdraw from EMU and continue to be a part of the EU under current legal regulations. Within this context, Lisbon Treaty has clarified inadequately the opinion of the EU officials on a member state withdrawing from the EU and has remained obscure on withdrawal from the EMU. According to the legal analysis carried out in this paper, article 50 of the Consolidated version of the Lisbon Treaty suggests that a member state is able to prefer to stay in the EMU, while it withdraws from the EU and also it suggests that it is possible to opt for a witdrawal from the EMU and continue to be a member of the EU. One of the conclusions of the paper is that a more clear strategy for withdrawal and expulsion might be beneficial for the EU integration process if used conveniently. In the end, even if the Lisbon Treaty makes such scenarios legally feasible, at least for now, it is considered that this kind of agreements are not realistic and negotiable in terms of EU politics