I see nowt wrong with betting on your team to win or yourself scoring. But it's dodgy when you start betting on the other team to win, which opens a can of worms to whether you've thrown a game. Im sure many a footballer of days gone by that had a flutter on themselves to score.
I don't think the aussies are in a position to not pick gems for there workmanlike team of players. He should be in the squad at all times to change things up.