Jamie Clarke has been a key player for Armagh U21s this term
Corner-back Mark McGowan and full-forward Gerard Ward remain unavailable for Donegal U21's Cadbury's Ulster FC semi-final at Ballybofey on Wednesday.
Sean Clerkin's side defeated Derry at the semi-final stage and their squad is mainly made up of players who won the Ulster minor title three years ago.
The full-forward duo of Michael Murphy and Dara Gallagher are expected to provide the main attacking threat.
They amassed a total of 0-7 in the semi-final win over Derry.
For Armagh, the midfield pairing of Kieran Toner and Stephen Harold will be pivotal.
The Crossmaglen trio of Paul McKeown, Kyle Carragher and Jamie Clarke all turned out in the semi-final just 24 hours after their defeat to Kilmacud Crokes in the All-Ireland club final, and are expected to feature again.