Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_50 ( exit_date VARCHAR, transfer_fee VARCHAR, player VARCHAR )

### Question ###
When was the exit date KiatPrawut Saiwaeo who had a transfer fee of released?

### Accurate SQL ###

SELECT exit_date FROM table_name_50 WHERE transfer_fee = "released" AND player = "kiatprawut saiwaeo"