It's a tough call. Of the available choices, here are my thoughts
Matai-It's between him & Alberts. See how they go in the trials
Alberts-Replaces 'Alberts' with Matai at the above and you've got it.
Stephenson-Keep him on the wing. I watched his insubstantial crap in the centres for two seasons...too slow, poor defence, selfish on attack. Who could have guessed he had the makings of a solid winger? Another season under his belt at this position and the big fella might develop into a real force in that number 2 Jersey...
Menzies-ROFLMAO. The Beaver needs to stay in the forwards...and get another two year contract so he can capture that worm Terry Lambs most games played record.