As to [this comment](https://politics.stackexchange.com/questions/499/what-would-be-the-steps-necessary-for-a-country-to-leave-the-e-u#comment1194_499):

[I]s it possible to leave EU but remain in Eurozone, legally?

<sup>Thanks [@DVK](https://politics.stackexchange.com/users/115/dvk) for the question</sup>