The Glenties side had appealed the game to the county board in relation to the black carding of Ciaran Bonner in last Sunday’s semi-final at O’Donnell Park.
They claimed that Bonner had received a previous yellow card before being black-carded by referee Jimmy White.
This would have meant that Bonner would have got a red card and Glenswilly could not have brought on a replacement.
Ironically the player who replaced Bonner, Oisin Crawford, scored one of two late frees which dragged Glenswilly over the line.
Naomh Conail presented their case to the county board last night but it was rejected.
It is yet unclear as to the reasons why the appeal was rejected.
The final between St Eunans and Glenswilly will now go ahead at MacCumhaill Park at 4pm on Sunday.