The GAA looks set to scale back its plans to redevelop Casement Park, BBC News NI understands.
It is expected the ground capacity will now be much lower than the 34,000 previously planned.
As a result it will not be able to stage Ulster senior final matches but will instead be used for other provincial fixtures.
The move comes amid a long running dispute over funding for the project.
The development was also delayed over prolonged planning disputes.
Rebuilding the west Belfast stadium was estimated to cost about £260m of which £120m was jointly in place from the Stormont Executive, the Irish government and the GAA.
The UK government had pledged a further £50m as part of the spending review which left a shortfall of £90m.
It is understood there is now a question mark over the government's financial commitment which has prompted a rethink.