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I'll bold the ones who are definitely out, underline possible/probable Wallabies and italicise the ones who should be out.
2014 WESTERN FORCE – Senior Squad
Robbie ABEL (EPS), Chris ALCOCK, Phoenix BATTYE, Marcel BRACHE, Luke BURTON (EPS), Nathan CHARLES, Adam COLEMAN (EPS), Angus COTTRELL (Injured), Pek COWAN, Nick CUMMINS, Patrick DELLIT (Heard he was going NSW Country), Sias EBERSOHN, Tetera FAULKNER, Kyle GODWIN (or injured), Dane HAYLETT-PETTY, Jayden HAYWARD, Chris HEIBERG, Matt HODGSON, Zack HOLMES, Kieran LONGBOTTOM, Ryan LOUWRENS (EPS) (Injured), Salesi MANU, Alby MATHEWSON (We should make room for locals e.g. Justin Turner), Ben McCALMAN, Hugh McMENIMAN, Luke MORAHAN, Ian PRIOR, Junior RASOLEA, Brynard STANDER, Wilhelm STEENKAMP (see Alby), Ed STUBBS (I imagine he's not going to be with Force in 2015), Heath TESSMAN, Chris TUATARA-MORRISON, Rory WALTON (EPS), Sam WYKES.
So how many does that leave us with? About 18. There are a couple (I count about 6) whose future with the Force is still uncertain. Maybe some who haven't announced they are leaving yet won't be included.
Otherwise, I reckon a guy like Robbie Abel should be loaned out to give Harry Scoble a go behind Heath Tessman (or vice-versa).