Collingwood's Ben Reid, John McCarthy and Chris Dawes after the AFL Round 12 match between the Melbourne Demons and the Collingwood Magpies at the MCG, Melbourne.

John McCarthy of Collingwood celebrates after the AFL NAB Cup Grand Final match between the Essendon Bombers and the Collingwood Magpies at Etihad Stadium, Melbourne.

John McCarthy of Port in action during the NAB Cup Round 02 match between the West Coast Eagles and Port Adelaide Power at Rushton Park, Mandurah. (Photo: Michael Willson/AFL Media)

John McCarthy (L) and Ben Reid (R) share a laugh during a Collingwood Magpies recovery session at St Kilda Sea Baths, Melbourne.

Paul Medhurst(L) and John McCarthy(R) leap high over Dean Polo of Richmond during the AFL NAB Challenge match between the Richmond Tigers and the Collingwood Magpies at Visy Park, Melbourne.

John McCarthy of Collingwood in action during the AFL NAB Challenge match between the Richmond Tigers and the Collingwood Magpies at Visy Park, Melbourne.

First gamers Brad Ebert, John McCarthy, Jarrad Redden and Chad Wingard celebrate victory after the AFL Round 01 match between Port Adelaide Power and the St Kilda Saints at AAMI Stadium, Adelaide. (Photo: AFL Media)

John McCarthy of Port in action during the NAB Cup Round 01, Week 02 match between Port Adelaide Power and the Carlton Blues at AAMI Stadium, Adelaide. (Photo: Michael Willson/AFL Media)

John McCarthy of Port during the AFL Round 16 match between Port Adelaide Power and the Essendon Bombers at AAMI Stadium, Adelaide. (Photo: AFL Media)