Mark McCrea and recent Academy signing Steve Macauley are named on the wings, while scrum half Paul O'Donohoe makes a welcome return to a Connacht starting line-up.
Flanker Eoghan Grace will captain the side and is joined in the back row by former Ireland Under-20 internationals David Heffernan and Aaron Conneely.
Carolan is looking forward to the game, stating: "With round 3 of both the Heineken Cup and British & Irish Cup in just two weeks' time, this is a great opportunity to give players a run-out and have a look at different options."
Connacht Season Ticket holders can gain free entry to the grounds for Friday's Connacht Eagles v Leinster 'A' match in Galway.
CONNACHT EAGLES (v Leinster 'A'): Matthew Jarvis; Mark McCrea, Conor Finn, Brian Murphy, Steve Macauley; Jack Carty, Paul O'Donohoe; Brett Wilkinson, Kevin O'Byrne, JP Cooney, Ultan Dillane, Jonathan Gardiner, David Heffernan, Eoghan Grace (capt), Aaron Conneely.
Replacements: Kurt Haupt, Paul Griffin, Peter Reilly, Brian McClearn, Paul Maxwell, Chris Lilly, Tadhg Leader, Callum Boland.