1) Simonsson to Cleary. Self-explanatory, lock it in.
2) Sorensen to Murray. Sorensen could easily be kept, but it's a solid 50-55 guy to a possible 60+ player, particularly with Souths in danger of missing the eight. Not completely necessary, but likely an upgrade.
3) Hopgood to Haas. Moves down a position in the rankings due to RCG injury, but still a likely upgrade from a 55-60 to a 65-70 player, and it would probably be bad not to own the best MID in the game for the run home.
4) SSmith to Kiraz. Will hold off this one unless Kiraz gets DPP, at which point he becomes super-useful for looping and cover. Sandon has plenty of money still to make, but I probably won't be able to use it, so getting someone who fits in my squad is more important right now if the opportunity presents itself.
tl:dr, one trade locked, not sure on others... rush to optimum team or keep more insurance trades in hand