Option 1
At trick 6 lead Declarer's K♣, followed (at trick 7) by the 7♣ to Dummy's 10♣ (if South plays low) for an indirect finesse against the Q♣.
If the finesse is successful the K♠ and Q♠ are lead from Dummy on which Declarer discards his two remaining diamonds (tricks 8 & 9).
Then Dummy leads the A♣ so that Declarer's last non trump card (the 8♣) is removed from his hand.
Declarer now has all remaining winners but one : South's J♥.
This option has a 50% chance of success, but if the ♣ finesse fails, Declarer will go down 2 tricks.
Can you figure out Option 2 ?