You have a choice of Hayward, Tippett, Cunningham, Sinclair, Robinson or Aliir.
Aliir is not ready yet but he has good closing speed. Structure wise it is a bit of an issue if he is picked unless he swings from offence to defence.
Cunningham is what we may need against the giants but coming back from a fairly long injury. will he have match fitness?
Tippett can compete in ruck as second ruck. But he needs to find his Mojo.
Hayward I think needs to be rested he is not going to make that much more impact compared to florent.
Florent Has been struggling the last few weeks. needs time off.
Sinclair, has been playing well enough in the neafl and has shown heart but has not had enough impact as a ruckman.
Robinson, I think we have enough of his style players in the team for next week.
If both are fit I would pick one of Tippett or Cunningham. Tippett for rucking duties, or concede the ruck and go with speed with cunningham. A lot of people would not be happy with Tippett being picked but if he wants to keep his spot this is the game to bring him back in if fit.
I would want to go with Cunningham since we have a few slow pokes in the team. Before his injury he really showed his full potential. We need that back.