Cronulla coach Stu Raper will address his players over their on-field attitude following their undisciplined performance against South Sydney, which culminated in the sending off of young five-eighth Greg Bird.

Bird was dismissed in the 66th minute of last night's 36-12 loss to the Rabbitohs at Aussie Stadium for kneeing Shane Marteene in the head - an out-of-character act but one which was labelled ridiculous by chief executive Steve Rogers.

Bird is expected to be charged by match review commissioner Greg McCallum and, as well as a significant stint on the sidelines, could face disciplinary action from the club.

Cronulla chief executive Steve Rogers confirmed the Sharks had the ability to fine Bird over his actions, which sparked outrage at the time and threw the spotlight on the club's on-field discipline.

Rogers also conceded Raper was concerned about his side's discipline.

"I have no doubt we will talk about it tomorrow," Rogers said.

Rogers was dumbfounded by Bird's outburst because the former Australian schoolboys captain is not renowned as a dirty player.

"It was just ridiculous," Rogers said.

"I don't know any other words for it."

Rogers also revealed the club had the capacity to fine Bird, although he indicated that was unlikely to happen.

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