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_204_402 ( id number, "rank" number, "player" text, "from" text, "to" text, "transfer fee\n(\u20ac million)" number, "year" number )

### Question ###
what is the average total of the transfer fee in million ?

### Accurate SQL ###

SELECT AVG("transfer fee\n(\u20ac million)") FROM table_204_402