Setanta Ó hAilpín's Australian Rules career is in doubt after he was suspended for fighting with his Carlton Blues team-mate Cameron Cloke at training.
The incident was captured on camera by Australian newspaper, the Herald Sun, during an intra-club training match.
The former Cork hurler was seen hitting Cloke with a left-handed punch and also launching a kick at his team-mate. Cloke had to be helped to the bench and treated for a cut over his eye, while Ó hAilpín was remorseful and offered an apology to the player and club afterwards.
It is not the first time Ó hAilpín has got involved in a scuffle at training. He also clashed with Cain Ackman during a training drill in June 2007
Ó hAilpín has been suspended indefinitely by Carlton, ordered to undergo an anger management course and will train with the Blues' VFL affiliate club the Northern Bullants while he is banned.
There may be further punishment for him as the match umpires have lodged a notice of investigation which means the AFL match review panel will take a look at the incident when they meet on Monday.
Carlton chief executive Greg Swann said: "Setanta's actions were totally unacceptable, on or off the field, and we are bitterly disappointed in the incident with Cameron Cloke."
Ó hAilpín has been with Carlton for four season, playing a total of 46 senior games.
Commenting on the incident, Blues coach Brett Ratten said: "I think in practice matches, if you go through history, and training in general there's all the argy-bargy and the odd hit here and things like that - but that is not a part of our game.
"I could believe the push and shove - and I think players first up, there's a lot of anxiousness in trial games and things like that so blokes do overstep the mark a little bit.
"But that action of kicking is not on. You even felt in the game it was pretty hard and physical, and that came over the whole ground
"You looked around and there were a lot of jaws open to say, `did that really happen?'"