If he does move, Van Persie will be painted as the villain in this. But this is Arsenal's own making.
If you make no progress and show no ambition to do any better than 4th place every season then your best players will leave. What's keeping him at Arsenal? The opportunity to not win anything for the 7th season in a row?
The writings been on the wall for an entire year too. He's basically given them a year to try and sort themselves out and prepare for him leaving. This isn't like Torres putting in a transfer request on deadline day in January.
Van Persie has given them plenty of notice and he delivered on the pitch right up until the end.
Simple truth is Arsenal have had little to no forward momentum, or even attempt at forward momentum, for too many years now. And this is the ramification.