This excerpt taken from the NKE 10-K filed Jul 27, 2009.
Exchange Control Information. Exchange control regulations require Turkish residents to purchase securities through financial intermediary institutions that are approved under the Capital Market Law (i.e., banks licensed in Turkey). Therefore, if the Optionee exercises his or her Option using a cash exercise method, the funds must be remitted through a bank or other financial institution licensed in Turkey. A wire transfer of funds by a Turkish bank will satisfy this requirement. This requirement does not apply to a cashless exercise, as no funds are remitted out of Turkey.