When was the exit date KiatPrawut Saiwaeo who had a transfer fee of released?
CREATE TABLE "reserves_academy" (
  "exit_date" text,
  "pos" text,
  "player" text,
  "to_club" text,
  "transfer_fee" text
);
SELECT "exit_date" FROM "reserves_academy" WHERE "transfer_fee"='released' AND "player"='kiatprawut saiwaeo';