Willy Sagnol with a type as career end had what has the transfer fee?
CREATE TABLE "transfers_out" (
  "nat" text,
  "name" text,
  "type" text,
  "transfer_window" text,
  "transfer_fee" text
);
SELECT "transfer_fee" FROM "transfers_out" WHERE "type"='career end' AND "name"='willy sagnol';