Wenger finally understands defensive responsibilities
When you have the ball in the modern game you have to attack, when you don’t have the ball you have to defend. All the players who can’t do that, cannot play
Translation: players who can't both attack and defend can fuck off. It's taken Wenger more than ten years to reach this conclusion. This is most likely why Walcott hasn't gotten too much playing time after coming back. And probably why Giroud is always preferred as CF.