Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_63 (transfer_window VARCHAR, name VARCHAR, transfer_fee VARCHAR, moving_to VARCHAR)
### Question:
What is the transfer window with n/a as the Transfer fee, free agent for the Moving to, and Joe Sagar as the name?
### Answer:
SELECT transfer_window FROM table_name_63 WHERE transfer_fee = "n/a" AND moving_to = "free agent" AND name = "joe sagar"