Sunderland defender Danny Collins could have put his Wales future in doubt by launching a shock attack on national manager John Toshack.
Collins, relegated from the Barclays Premiership with the Black Cats this season, asked to be left out of Toshack's squad for two friendlies later this month against the Basque Country and then Trinidad and Tobago.
Toshack would not expand on Collins' request 'not to be considered' for the two matches when he named his squad this week.
But the 25-year-old has revealed a row with the Wales boss which arose after he had been left on the bench for the home friendly against Paraguay in March.
Collins told the South Wales Echo: 'Nobody is prouder of playing for his country than I am, but putting on six players before me at the last game was not on.
'I simply told the manager that at the time I had played 20-odd Premiership games and putting six players in front of me and then not even getting onto the field as a substitute was a poor show, and not to include me in the summer squad.
'I told the manager that I rather the break and be fresh for next season with my club and hopefully push them back into the Premiership.'
Collins' attitude will hardly endear him to Toshack, who has not been afraid to dump players from his squad, such as Robbie Savage.
Prior to the Paraguay game there was even talk of Collins being dropped from the squad altogether following a poor display in the previous friendly in Cyprus last November.
Collins added: 'Yes I had words with the manager and he told me `So you don't want to play for Wales again'. I told him that I did not say that.'
Buckley-born Collins made his debut for Wales against Hungary last year and has four caps. He played just 13 first-team games for Chester before being sold to Sunderland for £140,000 in October 2004.
There were questions marks over his attitude when he pulled out of a summer training camp in 2005 with Wales because he was moving house.
Collins said: 'I have been to the majority of the camps, but when six players go on in a game before you and you're playing in the Premiership - it's taking the mick.
'I don't know whether or not my international career is over, I hope not because anyone will tell you how much it means to me, but we will just have to see when the next squad is announced.
'All I did is express my opinion that I was not happy travelling everywhere and then not even playing while players are being picked before me from the lower leagues.'