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_48 (since VARCHAR, transfer_fee VARCHAR)
### Question:
What is Since, when Transfer Fee is "£ 12m"?
### Answer:
SELECT since FROM table_name_48 WHERE transfer_fee = "£ 12m"