agger with djourou would be a good shout, but wenger is not going to buy a top, young CB. in his mind, he's already bought one (koscielny), and he has vermaelen and djourou as the normal first choice pairing. he will only look for temporary, cost-effective solutions. ideally, it'd be a solid, experienced CB on loan, but more likely, he's going to make a silvestre-type signing.
you guys are wasting your time talking about guys like ciani, agger, cahill, etc.