Republic manager Giovanni Trapattoni plans to make four changes to his side.
The Italian has named his intended team for the final match of the four nations tournament in Dublin but said he may review his line-up after another training session.
Damien Delaney, Kevin Foley, Seamus Coleman and Keith Treacy are the players to make way following Tuesday's 5-0 thrashing of Northern Ireland.
Defender Darren O'Dea has won his battle for fitness after an ankle injury while Birmingham's Keith Fahey, who joined up with the squad after the Northern Ireland game, slots into midfield.
Wolves winger Stephen Hunt comes off the bench to play on the left while Portsmouth's Liam Lawrence replaces Coleman on the right.
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 Brom 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 Ireland and Scotland have won their opening two matches of the competition and the winner at the Aviva Stadium will claim the trophy.
Trapattoni's priority is next week's 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."
Counterpart Craig Levein made six second-half changes against Wales, but it expected to name a similar starting line-up providing Charlie Adam, Gary Caldwell and James Morrison all pass fitness tests.
All three were involved in the 3-1 win over Wales, with Morrison on the scoresheet, but Adam is struggling with back and groin problems, Caldwell has a hip injury and Morrison has a calf strain.
Stephen Crainey, as expected, has returned home to undergo an operation.
Kenny Miller, who scored against the Welsh, will captain the side once again in the absence of Darren Fletcher, and boss Levein insists his team are confident they can win.
"I've got players who are high on confidence because of their individual performances throughout last season.
"When you have players who are confident, then my job becomes an awful lot easier.
"A lot of people spoke about the difference between the first half and the second half in the game the other night but I didn't feel there was a huge difference between the two, except that we didn't capitalise on the goalscoring opportunities that we had.
"The one thing about the players we've got, every time they take to the field they do their utmost to help each other and try to win matches. That, again, makes my job a little bit easier."
Provisional Republic of Ireland team to play Scotland in Carling Nations Cup at the Aviva Stadium on Sunday, May 29: Given, McShane, O'Dea, Kelly, Ward, Lawrence, Andrews, Fahey, Hunt, Keane, Cox.