CREATE TABLE table_203_237 (id DECIMAL, "n" DECIMAL, "p" TEXT, "nat." TEXT, "name" TEXT, "age" DECIMAL, "moving from" TEXT, "type" TEXT, "transfer\ window" TEXT, "ends" DECIMAL, "transfer\ fee" TEXT)

how was the only player to have a transfer fee of 0.67 m ?
SELECT "name" FROM table_203_237 WHERE "transfer\nfee" = 0.67
SELECT "name" FROM "table_203_237" WHERE "transfer\nfee" = 0.67