There is no land* which isn't the land/territory/protectorate of an existing country.
The sole exception being Antarctica however the vast majority of existing nations have signed a UN treaty to prevent that land from being claimed by any existing or new nation.
well you know if we had to pay a part of the funding inorder to purchase the island from a sovereign than it could be arranged. If a big name like stef or tom woods got behind this we could probably raise enough.
Land is the one thing for which global demand (on any extended timespan) is always increasing and nobody is increasing the supply. A country will gladly give you deed to land UNDER THEIR SOVEREIGN RULE however countries generally do not willingly party with territory. Nations are a sort of "good ole boys club" with no vacancies available (without the use of force)*. It is the obvious "oversight" entities like the UN deal with interactions between existing nations however they almost intentionally pretend that all these nations have always existed and will always exist and no other nation has ever or will ever exist. For all the pomp and diplomacy nations are formed by violence.
This covers the issue pretty well
http://www.worldislandinfo.com/Starting%20island%20country.html
The only likely scenario for creating a new nation would be geoforming a new island in international water (which is very deep). We are taking an engineering project to rival the best the human race has accomplished and something on the scale of tens of billions of dollars, millions of man hours, and years (if not decades) in the making.
A more plausible shorter scale scenario would be a very large ship (i.e. floating nation) or other manmade structure (deep water oil platform) or possibly a seastading community using a platform as a "home base" of sorts.
* In the last sixty years the only "new" countries were either nations where the existing government fell and was replaced by a government under the name of a new nation or nations which split into multiple new nations (i.e. Yugoslavia) after years of internal conflict.