The player moving to Villa Rio has what transfer fee?
CREATE TABLE "squad_changes" (
  "nat" text,
  "name" text,
  "moving_to" text,
  "type" text,
  "transfer_window" text,
  "transfer_fee" text,
  "source" text
);
SELECT "transfer_fee" FROM "squad_changes" WHERE "moving_to"='villa rio';