CREATE TABLE table_67660 ("Date" TEXT, "Round" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" FLOAT, "Scorers" TEXT)

Which Opponent has a Round of qf replay?
SELECT "Opponent" FROM table_67660 WHERE "Round" = 'qf replay'
SELECT "Opponent" FROM "table_67660" WHERE "Round" = 'qf replay'