I won't pretend to know who is next but I know what we need:
Two attack minded/creative players and a keeper.
Unless we want a repeat performance of Aris away we need to add depth. Every two positions needs at least 3 players Bobby can start against any team in Europe (that disqualifies the likes of AJ, SWP, Ned and others).
Keeper is obvious. We need a real number 2.
Our defense is solid I think. LB is finally covered, RB is as strong as any in the Premier league and our CBs are good and will in a year or two be great.
Our holding and Box to Box midfield positions are adequately covered with Milner, De Jong, Yaya, and Barry.
Up top though we are extremely thin. With Aguero in and Tevez out we have basically the same personnel as last year. We need at LEAST two players in the same class as:
Balo
Dzeko
Aguero and
Silva.
My preference is Pastore and Mata but Sneijder, Nasri, Hazard would all do. The important thing is getting that depth. We cannot go into a place like Madrid in February with AJ or even worse Milner starting on the wing.