If you thought Seamus Coleman's sickening leg break would have brought Ronald Koeman and Martin O'Neill closer together, you'd be very wrong.Both managers must be very concerned about the full-back's welfare.However, Coleman isn't the only Evertonian who has suffered an injury while on duty with the Boys in Green in recent weeks.James McCarthy could be out for as long as six weeks, per the Liverpool Echo, and it's reignited that old debate of club vs country.Premier League managers are notoriously touchy about their players heading off on international duty. Add that to the fact that Koeman is pretty touchy anyway, and we were in for a treat when it came to his rather awkward press conference.The Dutchman channelled his inner Roy Hodgson by reading out a pre-prepared statement - only this statement wasn't to resign, but to hit out at O'Neill.Skip to 2:00 of the video below to watch Koeman's comments.

"James had an injury when he reported for Ireland duty last week," Koeman began.

"Our medical team made the Ireland medical team aware of this, of course.

"Everton’s medical team advised extreme caution, not only due to the current injury but due to previous injuries too, and the assessment by the Ireland medical team was that it would be a high risk for James to play against Wales... he was selected to start the game by the Ireland manager who, in my opinion, in this instance was not protecting the player."

O'Neill hits back...

Unsurprisingly, O'Neill quickly got wind of these comments, and he's now responded, via the Guardian:

“The Everton manager, master tactician of the blame game, has struck out in his comments today, criticising both myself and James McCarthy. Perhaps a review of Everton’s pre-season programme might provide some enlightenment.

“James had a magnificent tournament for the Republic of Ireland last summer during Euro 2016, playing his last game in very late June.

"He then returned to Everton after a very short break, but only 11 days later, he played his first of three games, all within an eight-day period, against Real Betis, Manchester United and Espanyol. Overloading?"

And then Koeman does it again

The former Leicester and Celtic boss went on to suggest that Koeman have a look at himself before criticising the national team, but it didn't end there.

We're still not over the fact that the Everton manager has Twitter, which is very weird. In situations like this, however, it's very handy for making one last not-so-subtle dig.

Zing! Spare a thought for James McCarthy, who's now in a very difficult position indeed.

Which manager is in the wrong? Have your say in the comments.