Another slight cause for concern is that Wenger will probably have a say in who is successor should be, I mean he approved the appointment of Gazidis didn't he. Fancy that, choosing your own boss.
Dragan Stojkovic is rumoured to have been earmarked, apparently he's a mini-Wenger. Spookily also currently managing the club in Japan Wenger did before he joined us.
I understand the clubs self-sustaining policy, it's rammed down our throats enough times, but I really hope when Wenger does leave, the club back the new manager with some funds even if it means taking a hit on the profits for one year. The new guy has to be given a chance to compete. Wenger spent some relatively large amounts during his first 4-5 years to build his team, so hopefully that is the case for his successor.