If somehow Barrett didn't watch the game & Hopoate stays in the team then it will be him, otherwise the only other choice would be Elliott despite his off field issues. The only other players remotely capable would be Allan, Cotric or (cough, cough) Lewis.
The only 2 players in this list to show any form this year & would be capable of leading by example on the field are Elliott & Cotric. Has Cotric ever lead a team at any level? Elliott was the NSW Cup captain for a while there. Has he been a good boy & stayed off the drink?