CREATE TABLE table_name_30 (transfer_window VARCHAR, transfer_fee VARCHAR, moving_to VARCHAR)

What is the Transfer window, when the Transfer fee is 'free', and when the item 'Moving to' is Norwich City?
SELECT transfer_window FROM table_name_30 WHERE transfer_fee = "free" AND moving_to = "norwich city"
SELECT "transfer_window" FROM "table_name_30" WHERE "free" = "transfer_fee" AND "moving_to" = "norwich city"