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_30 ( transfer_window VARCHAR, transfer_fee VARCHAR, moving_to VARCHAR )

### Question ###
What is the Transfer window, when the Transfer fee is 'free', and when the item 'Moving to' is Norwich City?

### Accurate SQL ###

SELECT transfer_window FROM table_name_30 WHERE transfer_fee = "free" AND moving_to = "norwich city"