Simon Kjaer would have been a good signing for Arsenal .
Went to Wolfsburg pretty cheap.
They could also do with a typical Serbian centre back in Subotic. Though his club has said" he will cost two truckloads of gold".
He is a defender in the Vidic,Ivanovic mould.
Hangelaand would be a decent signing for them too.
I think they also need a goalkeeper as having Almunia behind them makes the defense nervous. It makes a massive difference Psychologically as witnessed by Manchester United defenders in the period between Shmeichel and Van der Saar.