Mr Burns said the GAA has had a “relook at the type of stadium that is going to be built, based on the fact that we’re not getting the Euros anymore”.
“It’s a significantly smaller cost because we’ve taken a lot of the fitout away from it to try and make it as small a cost to the public purse as possible.
“We have managed to retain the number of people who will fit into it, while having it to a lower specification,” Mr Burns said.
The GAA president told BBC News NI it would be unhelpful to discuss specific costs ahead of the tendering process.
“We are very confident in what we have done with regard to the reduced costs and I know that the minister, as a result of what he heard today, is still very committed to the project and feels strongly that it can be delivered,” he added.
Plans to redevelop the stadium in time for the Euro 2028 football tournament were halted last month.
The UK government said that the estimated cost of rebuilding Casement Park stadium in Belfast had “risen dramatically” to more than £400m.
It said it would not be providing funding to redevelop the stadium in time for the tournament, adding that there was a “significant risk” it would not be built in time.
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