Rabbitohs rake Cameron McInnes says he has full confidence in Cody Walkers ability to fulfil his role when Souths meet the Roosters in their season opener on Sunday.

McInnes is locked in a battle with fellow hooker Damien Cook for the spot vacated by the departure of Isaac Luke.

Walker is seen as the ideal replacement at Redfern for Dylan Walker and McInnes says after an excellent pre season, he has no doubt Walker can get the job done if selected.