Croke Park chief executive Peter McKenna says he will find a different opponent for Manchester United if Leeds are unable to face their old rivals in Dublin this summer.
United have travelled to the Republic of Ireland this week to promote a pre-season game against Leeds.
The clash between the Roses rivals is scheduled for 12 August and if it goes ahead will be the first time two English football clubs have played at the historic 82,000-capacity home of the Gaelic Athletic Association, which for decades banned soccer and rugby from being played there.
However, Leeds have said they will not be able to play the match if they either got relegated and dropped into the EFL or feature in next season's Community Shield, both of which are due to be played the weekend after the planned Manchester United encounter.
McKenna is confident the match will go ahead as planned but he is ready to find an alternative if required.
"That is the joy of sport, you never know what the result is going to be," McKenna told BBC Sport.
"It is very clear Manchester United will be here on 12th. The opposition is Leeds but there are a couple of concerns.
"Could Leeds be relegated? I think that is unlikely given their position in the table and some of the clubs below them, who are struggling. But you never know. That is an unpredictability.
"They could also win the FA Cup final and that would change things. That is more likely. They are a good team. That could happen.
"If it does, we will just have to chase different opposition."
