The Scotland assistant manager tipped Ash Taylor - who has Wales Under-21 caps and is currently recovering from a knee op - for a Scotland call-up.
However he poured cold water on the suggestion that Ryan Jack - a standout for top-of-the-table Aberdeen this season - should be picked for the national team.
McGhee said: "We’re aware of the Ash Taylor situation and we have talked about it. He’s one we will look at.
"Central defence is maybe a position that’s a bit more open than the midfield. The problem for Ryan Jack is we have such strength in that area of the squad.
"We’ve got Scott Brown, Charlie Mulgrew plays in there now, James Morrison and James McArthur. A lot of our best, most reliable players play in midfield."
However, the Gotherburg Great did offer Jack a glimmer of hope - while reminding the December SPFL Player of the Month that he is up against stiff competition from English clubs at the bottom end of their divisions.
"All the likes of Ryan can do is keep playing and he can trust – like Scott Arfield at Burnley and others including Jack Grimmer – we’re doing our due diligence," said McGhee.
"They can be assured we’re not just accepting Brown, Mulgrew and Morrison are the players. We’re looking at them. The day we think Ryan’s better than them he’ll be in the squad. They can trust we’re doing our homework."
Source: Press & Journal