The Everton midfielder has been unable to play in either of his country's friendlies ahead of the tournament, but believes he is ready to resume action
James McCarthy has declared himself fit for Republic of Ireland's opening game against Sweden at Euro 2016.
The midfielder missed both warm-up games ahead of the tournament due to a muscle injury he picked up in Everton's final game of the Premier League campaign against Norwich City.
He returned to training with Martin O'Neill's squad earlier this week and was able to play a full part on Thursday as their attentions turned to Sweden on June 13.