The GAA has invited expressions of interest in the next phase of the development of Casement Park in Belfast.
The stadium plan has been stranded amidst rising costs and questions over who will pay for it.
Ulster GAA has now published a "prior information notice" on plans to carry out remediation works on the Andersonstown Road ground.
It would entail excavation and management of 107,000 cubic metres of material.
The notice says the new Casement Park stadium construction will commence in 2026 "subject to funding".
Firms interested in the work are being asked to advise how long the work might take and the manner in which it would be done.
The GAA said the responses would be used to shape the final tender document.
Casement Park was opened in 1953. It closed in 2013 with a view to redevelopment.
But the proposal became stuck in a planning row and the intervening years until approval was granted saw costs rise.
Permission has now been granted for a 34,500 capacity stadium.
The Northern Ireland Executive had originally pledged £62.5m (€60m) towards the cost with the GAA providing £15m (€14.4m).
But the costs rose way beyond the initial estimate of £77.5m (€74m).
At one point the ground was due to hold games during the Euro 2028 competition but the plan was dropped when the UK government said it would not close a funding shortfall to bring the ground to Euros standard.
It claimed the cost of a Euros compliant ground would be £400m (€384m).
The stadium plan was reconfigured to take account of the changed requirements.
Last November, the GAA said a reported estimate of £270m (€259m) was "closer" to the cost assumptions it was working on for the stadium, saying it was preparing to consider increasing its financial commitment.
The Irish Government has promised to provide €50m to the cost of redevelopment.
