In terms of midfield it looks like (of those that played last season):
In: Crofts, Hammond, Orlandi, Lopez
Out: Noone, Navarro, Sparrow, Vincelot, Harley, JFC
Players peak later in their careers, it's the same with birds in the sack, it's all very well being young and spritely, but a bit of experience and know how work wonders.