St Pat's and Shels will meet again tomorrow night following Friday night's 1-1 draw, kick-off at Tolka Park is 8pm.
The game will go to extra-time if the sides are level after 90 minutes, and penalties will decide the game if necessary.
Liam Buckley will give fitness tests to Kenny Browne and James Chambers while Keith Fahey is available despite picking up a knock late in the game on Friday.
Greg Bolger is ruled out due to suspension and Aaron Greene is cup-tied.
Tickets for the game will be on sale at Tolka Park priced at
|7||St. Patrick's Athletic||1||0|