Coach Mark McGhee insists all players who meet eligibility criteria will be considered for the Scotland national team, as Steven Caulker emerged as a potential option.
Reports on Tuesday claimed boss Gordon Strachan is trying to persuade the Cardiff defender to switch allegiance from England and join up with the Scots.
Caulker earned his only senior cap in a friendly against Sweden and has missed out on a place in Roy Hodgson's latest squad.
McGhee was unable to confirm whether Strachan has approached the player - who reportedly qualifies through a Scottish grandmother - but says they will continue to make full use of eligibility rules to find the best possible players.
He said: "He's someone who does [meet the criteria] as I understand it.
"We know who the boy is, we knew him before when he was at Tottenham. I don't know any more than that.
"Apparently it has been reported but that's all I know about it.
"He's irrelevant to us at the moment because I've got no idea whether he has been approached or not been approached."
McGhee added: "The rules are there in terms of who can and who can't play for Scotland.
"We are interested in looking at all players who meet the criteria.
"I don't think there are many players around that we don't know about who do fit the criteria.
"We will consider all options. It's down to the manager to discuss who he has thought about and who he has spoken to or spoken about.
"We will always be entitled to look wherever there are players who can play for us.
"If those players, who meet the rules in a certain way, are better than the ones who meet it because they are Scottish young players, we are going to use the best players that we can.
"The broader spectrum you have of rules, the more players there are going to be available to us and we've got to exploit that."
Royal Antwerp midfielder John Bostock is another player who could be on Strachan's radar after representing England at youth level.
McGhee said: "We've not had a look at him but he's another one on a list of players that we know meet some of the criteria to play for us. I'm not sure if he meets it all.
"There aren't many surprises. We know where most of the players are who meet the criteria.
"We are getting along and trying to see them as we go.
"We will leave nothing to chance, we will check everyone out who would have the possibility of playing for us, that's for sure."
Scotland play host to the United States in a friendly on Friday night at Hampden, before facing Norway away from home next Tuesday.
And McGhee is relishing a clash with the Americans that he believes Scotland can learn from.
He said: "It's a really interesting fixture for us.
"They have, I think, a different mentality from European teams.
"Any American players, like Australian players, that I've come across come with a huge amount of professionalism.
"I expect them as a unit, as a team and as a group to be like that.
"I think we can look at them and see things that will maybe benefit us, that we can learn a little bit from.
"I'm quite excited about this game, even though it's a friendly.
"I do expect them to be a better than decent team and opposition."