Ireland U20 centre Luke Marshall is one of a number of fringe players included the Ulster squad take on League leaders Munster at Ravenhill on Friday night.
Forwards Alan Whitten and Jerry Cronin could be in line for action as front row cover along with lock Neil McComb.
US Eagle Paul Emerick, centre Jonny Shiels, and scrum-half Ian Porter will also enter into the equation as five senior professionals are away on Ireland duty. .
The Ulster starting XV and replacements will be named on Thursday.
ULSTER SQUAD (v Munster):
Forwards: Alan Whitten, Paddy McAllister, Jerry Cronin, Bryan Young, BJ Botha, Nigel Brady, Andi Kyriacou, Dan Tuohy, Neil McComb, Tim Barker, Johann Muller, Ryan Caldwell, Pedrie Wannenburg, Willie Faloon, Robbie Diack, Chris Henry;
Backs: Adam D'Arcy, David McIlwaine, Paul Emerick, Mark McCrea, Tommy Seymour, Luke Marshall, Nevin Spence, Ian Whitten, Jonny Shiels, Ian Humphreys, Niall O'Connor, Ruan Pienaar, Paul Marshall, Ian Porter.