Ireland will try to put their disappointing Euro 2012 performance behind them this week when they start their Brazil 2014 campaign in the former Soviet Republic.
Trapattoni was keen to emphasise a fresh start for the country after their dismal showing in Poland, with new players like McClean central to that aim. He was part of a three-man strike-force during last month's 0-0 draw against Serbia, and Trapattoni said: "After his 90 minutes against Serbia, his position was clear."
He added: "We tried to play him differently but after 20 minutes I changed his position. Maybe in Kazakhstan McClean will play up with the two strikers. That is not a problem for him.
"We have also other players who can play in that position. The position is different (to where he usually plays), but he can also play there. We will wait and see what the condition of the other players is but he could play there."
With Damien Duff now retired, McClean will want to seize on the opportunity should he start in Astana on Friday evening.
One player who will not be turning out for Trapattoni is Darron Gibson.
The Everton midfielder refused to take part in Friday's qualifier, and the friendly that follows against Oman four days later, as he is still suffering from the disappointment of Euro 2012.
Gibson put in a series of fine displays since moving to Everton in January, but the former Manchester United man was left disillusioned when he did not make it off the bench during Euro 2012.
Trapattoni said that he respects Gibson's decision, but also insisted that Ireland will be able to cope fine without him should his self-imposed exile continue. "In the past we were frightened about missing players, but now we already have a squad," Trapattoni said.