Leinster will play an Investec Cup Champions Cup semi-final at Gaelic Games venue Croke Park next month if they beat La Rochelle this weekend.
The Aviva Stadium will be unavailable due to preparations at the venue for the Europa League final.
The Gaelic Athletic Association (GAA) agreed in March that Croke Park could be made available for the semi-final.
If Leinster win on Saturday, they will face either Northampton or the Bulls in Croke Park on the first weekend in May.
Croke Park hosted an all-Ireland European Cup semi-final in 2009, when Leinster defeated Munster 25–6 on the way to winning the competition for the first time.
The GAA’s decision last month opened the door for “rugby and football activities” to take place in Croke Park “in the coming months”.
In addition to the 2009 European Cup semi-final, Croke Park hosted international rugby and football matches between 2007 and 2010, during the redevelopment of the old Lansdowne Road into the Aviva Stadium.
If champions La Rochelle win at the Aviva Stadium this weekend, they will face Northampton at Stadium MK in Milton Keynes or the Bulls at an unnamed venue in the UK.
A Harlequins win in Bordeaux this weekend and an Exeter victory in Toulouse would set up an all-English semi-final at Ashton Gate Stadium in Bristol.
Toulouse will have home advantage if they reach the semi-finals, while victories for Bordeaux and Exeter would result in the last four games in Bordeaux.
