My aussie had a pad wound also when we got him, his was bad enough that he had to get a little of the pad removed and stitches though. But after it was stitched, we used saline bags with the bottom cut open, then cut little slits around the bottom part that was cut open, (hard to explain, I'll try to give you a visual). We then put his foot into the bag, and used gauze and wound it through the holes thereby we could tie it shut. (vet's idea) Since it was a heavier plastic then say a plastic ziploc bag, he didn't chew through it and it was durable. And we got him in Nov (about 5 years back) but the weather was wet and muddy, so it kept his foot dry and unbothered so it would heal and got plenty of air.
Another idea (maybe much easier, depending on the severity of the cut) is to first cleanse and disinfect the wound, and then apply a skin adhesive (liquid band-aid). I've used this for minor cuts and abrasions on the feet that just never seem to heal because of the constant action they receive. Possibly if it isn't actually bleeding he might leave it alone.
Another idea (maybe much easier, depending on the severity of the cut) is to first cleanse and disinfect the wound, and then apply a skin adhesive (liquid band-aid). I've used this for minor cuts and abrasions on the feet that just never seem to heal because of the constant action they receive. Possibly if it isn't actually bleeding he might leave it alone.