Arsenal made two mistakes in the summer window:
1.) Gazidis mouthing off about having money to spend put added pressure on Wenger to spend big on someone, anyone, which led to the farcical negotiations for Higuain and Suarez, and there's now going to be tabloid hacks waiting to use Ozil's price tag as a stick to beat him with should he have a run of indifferent performances
2.) They needed to sign a first-choice keeper - they were heavily linked to Julio Cesar, plus there were rumours about Iker Casillas and Kiko Casilla as well as an insultingly low bid for Vicente Guaita (they offered £3m, Valencia wanted £17m) - instead they loaned in Viviano as competition for Szczesny with the option to buy