GKs
Federici
Andersen
Hamer
McCarthy
Current theory is that you need at least 3 GKs on your books so we could prolly loan out one of those, but otherwise it looks a reasonable list.
Defenders
Rosenior
Armstrong
Mills
Ingimarsson
Kelly
Pearce
Cummings
Jeez, we look like light here. Rosenior won't have his contract renewed as he'll be too expensive. Ingi may well not take the offer of another year. Armstrong doesn't look like he'll recover - and prolly won't be the same player if he does. That makes this short list even worse looking. So, 2 new FBs and one if not 2 new CBs if Ingi walks.
Midfielders
McAnuff
Cisse
Gunnarsson
Tabb
Matejovsky
Henry
Karacan
Kebe
Sigurdsson
Davies
Antonio
Howard
Bryant
Taylor
Bozanic
By contrast with the defenders, that looks way too long. Cisse and Marek haven't been getting games so are highly likely to go. Wouldn't be surprised if Boris decides not to take the offer of another year, which may leave a vacancy for a more defensive midfielder (I must confess to not knowing what Bryant's, Bozanic's or Taylor's strengths are). Henry and Davies (or Robson Kanu) are adequate cover for the 1st choice wingers. From the (admittedly very short) time I've seen of Antonio, I wouldn't be disappointed if he left.
Forwards
Long
Hunt
Mooney
Church
Robson-Kanu
Rasiak
Bignall
Vasilev
Bell-Baggie
Thorvaldsson
Second half of the season has shown that we're OK in this department, IMO. Wouldn't be sorry if Rasiak went, but perhaps it would be a bit harsh after only one season.
So, it's defence that we're crying, nay screaming, out for replenishments with 2 FBs and 1 probably 2 CBs needed - if we could persuade/come up with the dosh for this season's loanees I would be happy.