Well, sonny, I don't like the purposes of your discussion 😃
There's really no sense in arbitrarily hiving off transfer spending from wages spending, and from what we know Arsenal doesn't do this either—they dispose of a chunk of their 'transfer budget' retaining players on improved contracts, just as I suggest.
IMO Van Persie would definitely sign if we closed the pecuniary gap between us and our rivals, but that's just a gut feeling.
Edit: never mind, actually read your post the second time through and realised I misconstrued you.