McCarthy sent Keane home on Thursday after the two clashed
in front of the rest of the squad at a team meeting.
admitted he had insulted McCarthy, said he had been provoked
after getting angry by the training facilities on the Pacific
island of Saipan.
The midfielder also claimed
McCarthy had accused him publicly of faking an injury before the
World Cup playoff against Iran.
Keane was unhappy that rather than talking to
him "man-to-man," McCarthy had called a team meeting to discuss the issue.
"I waited eight years to play in another World Cup and I'm
sacrificing that dream because of something I believed in."
The Manchester United player added it would be impossible for
him to return to the World Cup squad, "not after what Mick had
said and what the senior players had done to me.
I actually feel
more betrayed by them than I do by Mick - in particular (Niall)
Quinn, (Steve) Staunton and Alan Kelly."