Republic of Ireland assistant coach Roy Keane has taken aim at Everton boss Roberto Martinez.

Keane is concerned that Everton are exerting "pressure" on their Irish players around Republic of Ireland games and feels a "clear the air" summit with Martinez is required.

The Aston Villa coach acknowledges Martinez has a duty to his club but feels "balance" is needed regarding the international availability of James McCarthy, Seamus Coleman and Darron Gibson for the remainder of the Euro 2016 campaign.

"I worry that he (McCarthy) is under lots of pressure, particularly from Everton's point of view," said Keane on Sunday.

"Because every time there is an international match it does seem to be Seamus (Coleman) and James (McCarthy) under lots of pressure. They're turning up or they mightn't turn up, or they're struggling.

"You always get the impression from Everton that Seamus and James are both barely able to walk, that type of thing.

"So when they actually turn up and they are walking through the reception, 'Praise the Lord, it's a miracle'.

"Roberto, I don't think, has ever played senior level at international level and maybe he doesn't appreciate how big it is for us and how big the games are for us."