I don't think Wenger usually likes having two pacey attackers on either wing. There's usually a right-footer on the left who can cut in. He's stopped going with Gervinho now and has tried Rosicky or Ramsey or, now, Benayoun. That's what worries you that Podolski would be a replacement for Van Persie because there's no way Wenger is likely to give up on Walcott any time soon (nor should he). But we'll see. ™