I think people have a point that if you were going to bring in one world class player, number 10 isn't the area of your team that is the most lacking in talent. However, as you say, it's brilliant to be able to bring in genuine quality, he's a magnificent player who will not only be individually superb but will lift everyone and the signing also is the first indication in a while that Arsenal have the resources and the desire to buy the best players (which you will need to continue to do in coming windows) and therefore seriously challenge for trophies.