Gallen has already said he is retiring at the end of this year. I think Carney would be more like $450k as he is getting decent coin in England (but I can't see the club going down this path).
Agree on Elgey, and Burgess. Tamou is a tough one because he did have 2 cracking seasons, but he hasn't been good for a while. He reminds me of T-Rex a bit, in that he doesn't realise how big he is and drifts in and out of games.
As mentioned before, I'd go Maloney in the 6, and try for Napa. I'd also like Klemmer but I think we have stuff all chance of getting him from the Dogs. As for a backrower, I'd love an experienced hard nut with a couple of good years in them, like a BK, or Jeremy Smith type player (but I don't see many options here). We should look at Adam Docker (which another poster recommended); he is a bit of a throw-back to the old hard days that one (which could be good for us).