So, Ba to Chelsea is confirmed? It would be an incredible signing for them.
Looking at the players we need, well, we need one solid, CDM/physically intense CM. We severely lack spine in the middle. Also, a back-up LB along with an attacking midfield player would do. I think Santi's a lot more effective in wide areas than from the middle. From the right, Chamberlain is pretty useless and has been the whole season, so I'd use Santi on the right.
Arteta/Wilshere - CDM
Santi - CAM - Podolski
In defense, whenever PER isn't playing, we're a giant mess. Verm/Kosc never works, while Vermaelen has been poor this season. Koscielny has been fine at times, but the problem is that our best CB pairing is PER-Kosc, and as Verm is the Captain--he becomes undroppable.