Some are contracted, some not, interested on your opinion if any would be good targets:
Ceglar (HAW)
Lowden (HAW) (I have seen him a lot at BH and he has potential)
Grimely (HAW) (probably better at CHF but still an option)
Sinclair (WC)
Hannath (Freo)
Griffin (Freo)
Gawn (Mel)
Warnock (CAR) (I had to put him on the list as he will move somewhere, but I don't like him)
Martin (Bris)
Gorringe (GC)
Currie (NM) (will look to move I think)
Campbell (WB)
Phillips (GWS)
Good list - I've got a few comments.
I can't see the Hawks giving us anything. They wouldn't really be weakening their list per se but strengthening ours. Not good policy.
Griffin has gone from Adelaide to Freo, I don't think he's up for a move, Sandi is cooked soon so they'll want to hang onto Griffin. Hannath is a bit too small and could end up playing as that awkward forward/ruck that doesn't really work so well.
Warnock is shit.
Brisbane would be loath to move Martin on and again it would be his 3rd club. Though if he's keen for a return to Victoria? I think Luenberger will be more gettable than Martin (though I've had enough with injury prone ruckman) I want one fresh from the package
On balance I would say Melbourne keep Gawn.
WC just re-signed Sinclair though given Lycett is clearly number 1 and NicNat number (or 2 and 1 whatever) he might be on the move. Great size and perfect age.
Currie too. Though it's a worry that he hasn't been able to break into the North side with all their injuries (I mean Christ they were playing Daw ahead of him).
I like Gorringe and don't know enough about Phillips but he'd be GWS' 3rd or 4th choice so we should get in his ear. Again right size and age profile.
Campbell I like the look of on paper. That's all I know about him.
There's a lot out there but dealing in ruckmen is tricky area. They are often worth far more to the side chasing them then the side who has them. North don't have to get rid of Currie, for example, but he'd be worth a lot to us. If they don't move him on no biggie for them. Big problem for us. So often you end up paying overs. Unless the ruck wants to go.
A bit of a ramble but yeah my thoughts.