Trap to make four changes
The Italian today named his intended team for the final match of the tournament in Dublin but said he may review his line-up after another training session.
Defender Darren O'Dea has won his battle for fitness after an ankle injury while Birmingham City's Keith Fahey, who joined up with the squad after the Northern Ireland game, slots into midfield.
Record goalscorer Robbie Keane, who took his international tally to 48 with a double strike four days ago, again captains the side and will partner Simon Cox.
West Bromwich Albion striker Cox and Wolves utility man Stephen Ward, who will play at left-back, are rewarded for their goalscoring debuts against Northern Ireland with second caps.
Both Republic and Scotland have won their opening two matches of the competition and the winner at the Aviva Stadium will claim the trophy.
Focus on strong finish
Trapattoni's priority is next week's UEFA EURO 2012 qualifier in Macedonia but hopes to finish the competition well in front of a home crowd likely to be around 25,000.
"Obviously we will play for a good result but we do have one or two injured players. I am confident about our performance and the result.
"It is a game like a derby. Many of the Scotland players, like ours, play in the Championship or the Premier League. I hope and I think it can be a beautiful game."