We need more cover around the middle of the park, probably another back up striker and an improvement on our Full backs
Exactly what I think too.
What we need to get during this window is first of all a high quality DM.
Fullbacks is a major concern too, with José still long term injured, GJ fading away more and more (just bad form?), Cissokho turning out to be utter cráp, Flanno injured and Kelly still recovering from his latest injury.
As soon as Agger and Sakho get back from injury we have 4 senior CB's in our squad. That will do for now (quality wise too). But if these 2 stay injured we only have 2 PL tested CB's to put out on the pitch (Touré and Skrtel). That is a bit weak IMO.