I'm sorry to hear this. Do you have any small scratching posts? If you do then try to put them in front of the furniture and spray them with catnip spray to help entice him to use these instead of the furniture. I'd also get some heavy blankets or buy some furniture covers to help protect your furniture. I've never used the green apple spray so I don't know if this will help or not. Most cats don't like the smell of citrus so you could also spray some kind of a citrus spray and this might also help.

Both my couch and recliner are also in bad shape. I bought corduroy furniture covers and they really helped a lot. I also have plenty of small scratching posts all around and they've learned to use these instead. If all else fails you could try using soft paws on him. Here's a link:http://www.softpaws.com/. Good luck.