Foreigners who invest at least 2 million $, or purchase real estate in the amount of at least 1 million $, or employs at least 100 people, or holds government bonds worthing at least 3 million $, or deposit minimum of 3 million $ in Turkish banks will be granted a Turkish citizenship.
For the Regulation text please see: ~/UserFiles/OldSiteFiles/image/files/Turk-vatandasligi-kanunu.pdf