My thoughts on Potential Targets for Arsenal
First off, I think that one position that must be addressed is the holding midfielder. While Song is progressing well, in comparison with the other 'big' teams, he should not be starting Arsenal week in week out. Manchester United have Carrick, Chelsea have Essien and Liverpool have Mascherano and Alonso (both for now). Therefore I believe Arsenal need to buy a new defensive midfielder, someone who will allow Fabregas the freedom he needs.
The person for the job, in my opinion, is Lorik Cana. The man is an absolute beast. He is extremely solid in the tackle (borderline crazy), and hardly ever gets beat in one on one duels, but if he does, you can guarantee the opponent will be faced down on the turf afterwards. Although his strength, passion and determination are great, people forget when talking about Cana that the guy can actually play football as well. He might not be Andrea Pirlo, but he is a good passer of the ball, and occasionally gets on the scoresheet. He is also able to dominate aerially, something which Arsenal simply are not good enough at. I think he would be a great buy, and would complement Fabregas perfectly. Marseille are looking to offload him if the right offer comes in, so it is definately a possibility.
Other options- Blaise Matuidi (possible) and Momo Sissoko (very unlikely).
Next up, I think Arsenal need another centre back. I think that either Gallas or Toure will be sold, both are the same mould of defender, they use their speed to their advantage and try anticipate something before it happens. Regardless, no matter which one of the is sold, or if neither are sold, I think Arsenal should buy a tall defender who can dominate in the air, something which Arsenal are quite clearly lacking.
I believe that the best option would be Bazilian giant Naldo, who plays for Werder Bremen. During their run in the Uefa Cup (now Europa League) his stock rose significantly, and Bremen are willing to sell, and not for a ridiculous amount. He stands at a massive 6 ft 6 inches, is able to push nearly anyone of the ball and while he is by no means as quick as Gallas or Toure, he has decent pace, meaning he would be able to cope with the high line that Arsenal play. He is no doubt a threat from set pieces, but he can also hit a venomous shot from free kicks, and can do so much better than Toure. His physique would help Arsenal greatly, but more importantly he is a solid, reliable defender. Fulham's Brede Hangeland is often courted for this role, but I think Naldo would be a better option as he is much quicker than Hangeland. He would fit in with either Toure or Gallas, acting as the man who goes up for the long ball, and his partner would be the sweeper, as they are quicker than him.
Other options- Chiellini (not going to happen) Hangeland (decent option).
Finally, with the impending departure of Emmanuel Adebayor, Arsenal will need to buy a new striker. I believe that this striker should be able to win things in the air, but also be mobile enough to play the Arsenal way, fast fluid football.
My dream would be to buy Edin Dzeko, the man who scored 26 league goals in 32 matches, a phenomenal record. Standing at 6ft 3 inches, he is great in the air, causing huge (literally) problems for defenders. But, in addition Dzeko possess very good pace, not as quick as Adebayor but by no means a slouch. He would be able to fit in at Arsenal and play the way Adebayor did, just with more effort and determination. He is clinical in front of goal, as his tally would suggest, but he can also bring others into the game and play with his feet well. A stumbling block however, would be the price tag, he is very much in demand and it is unlikely that Wolfsburg would accept a bid of less than £30 million pounds.
Other options- Maroune Chamakh (untested, not great scoring record), Demba Ba (is he ready for the big time), Fernando Llorente (not blessed with great pace, average goalscoring record).
Let me know what you think, these are just my opinions.