Here's a list of people who would be up for the chop at the end of this year at this stage:
Bannister
Bryan
Chambers
Davies
De Luca
Longmuir
Prendagast
Sporn
Teague
Wiggins
Out of that you'd have to say Banno, Davies, Longmuir, Sporn and Wiggins are pretty much dead certs to go at this point so there's five.
I'd rather dump Chambers and have Russell move up a notch as we draft some quick mids/flankers. There's another.
I'd rather keep Batson than Bryan at this stage because Batson is only 19 and probably shows more intensity than Bryan so at the very least there's one accounted for.
That leaves De Luca, Teague and Prenda. You can't fault either of the big men because when they are able to involve themselves in the play. For De Luca it's about footy smarts and overhead marking, whereas Prenda it's about his positioning in the play.
Teague is virtually past it because he needs to work on his kicking, his pace and his ability to play the loose man role that earnt him a B&F. I don't really think he's capable of boosting any of those attributes sufficiently.
So this frees 8 spots up on the list with a spot already available (you forgot about that didn't you

). If we were to promote both expiring rookies this leaves 7 spots on the senior list to be filled.
It's quite conceivable that we could use six picks in a supposedly deep draft. That leaves one pick in this PSD and room for up to 5 rookies. I don't really see why we would want to spend any picks obtained for the draft save for our very last pick in one of those gimme trades, but that's a wait and see approach.
This is of course subject to existing contracts.