CREATE TABLE table_7997 ("Date" TEXT, "Season" TEXT, "Playing for" TEXT, "Opponent" TEXT, "Final score" TEXT)

What was the opponent in the 2008 09 season, with a final score of 2 3 l?
SELECT "Opponent" FROM table_7997 WHERE "Season" = '2008–09' AND "Final score" = '2–3 l'
SELECT "Opponent" FROM "table_7997" WHERE "Final score" = '2–3 l' AND "Season" = '2008–09'