With McEvoy basically the saints only big man could this kids get some games. He us quick too. Maybe even a running role and pinch hitting in the ruck?
I think he needs some physical development... Not sure though, but would doubt he'd play this year
Also (I know they aren't classified as rucks in SC) but Koschitzke and Stanley would probably be next in line
Im a big fan of Stanley, think he will start to play more often soon :)