GK, You do not need any.
LB, Matthew Briggs on loan, Jack Robinson, Adam Smith.
CB, You do not need any.
RB, Seamus Coleman becomes available in the first transfer window in every single FM game for me. Otherwise you do not need any as you have Zubar, Foley and Docherty.
CM, In my games I like to play realistically so I only sign players who wolves COULD get so I picked up David Fox, wes hoolahan on loan and Fabian Delph as a marquee signing for four million.
LM, I bought shaun maloney for three million to compete with Sako.
RM, I have Peszko and Boukari but all of my wingers can switch to either flank.
ST, You can pick up some good strikers from the premier league if your willing to wait for the likes of DJ Campbell, Fondre from reading, Jackson and chris martin from Norwich and of course you have Siggy and Doyle who should be your main strikers!
Hope this helps and up the wolves!