There is absolutely nothing wrong with the spine of our team, absolutely nothing. Szczesny is a great goalkeeper, he's already proved that. Now say Wenger was to go out and buy an affordable, available replacement for him, who is that going to be that's better than he is? Centre backs good but not great? They were only the best CB partnership in the league last season but okay, they're not great. Love how he uses Arteta as an the example, why not Wilshere? Even Ramsey? Because they're both great, Ramsey especially.
Arsenal had more injuries to key players than both Liverpool and Chelsea put together last season, as many as 8 of our top players were out at once at one point, that's why we came up short. We don't need another goalkeeper, in fact Wenger would be wasting his time pursuing one. A centre back? After Vermaelen leaving we could so with one, but we don't need to replace Koscielny or Mertesacker and Chambers is a more than capable back up or even starter ahead of Per, as he showed perfectly well against City. A strong defensive midfielder I'll give you, we've needed one for years, but it's not the end of the world if we don't get one. Giroud, Sanogo & Akpom all have their place and they don't need replacing with anyone who's name isn't Cavani, Messi, Ronaldo or Ibrahimovic.