Why is Bayern Munich's Ryan Johansson being prevented from playing for Ireland? It's a curious case.
Ultimately, the teenager is in bother because his Luxembourg-based parents Thomas and Christine naturally weren't thinking about an international football career in the weeks after his birth in 2001. Thomas is Swedish and Christine is Irish - although she was born in England to Irish parents, which adds a slight complication.
He was entitled to both Swedish and Irish nationality and through Thomas they quickly applied for a Swedish passport because it was a simpler process than the Irish route.
At the age of 12, Ryan gained a Luxembourg passport through his mother's residency there.
Their son's football ability was becoming apparent, but the family weren't aware that failing to formally apply for his Irish citizenship through the Foreign Births Register (FBR) before he made his first appearance for Luxembourg at 15 would have such implications.
That's because Luxembourg officials indicated that Johansson, a promising player who was snapped up by Bayern Munich, still had the option to switch to Sweden and Ireland if he so wished.
The problem for Ireland is that Article 8.1 of FIFA statutes say a player who looks to switch allegiance from one nation to another can do so provided they "already had the nationality of the representative team for which he wishes to play".
Therefore, when Johansson - who lined out for Bayern's first team in pre-season and is starring in the UEFA Youth League - decided that his future lay with Ireland, a request was met with a rejection from FIFA.
Correspondence from Luxembourg on Johansson's passport situation alerted global football authorities to his breach of their criteria. Johansson's family feel he was misled and strongly argued to FIFA that their application of the rules in this instance does not take a number of key factors into account.
The Irish Independent has seen FIFA's October 25 communication to the FAI explaining their stance, and asking if they had any more information to offer. They are now in possession of a strongly worded reply sent from Abbotstown but influenced by legal advice that Johansson's camp privately sought to present their case.
Their six arguments can be broken down as follows:
No response has been forthcoming. As Christmas draws closer, they are frustrated by the lack of a response and considering other legal options available. But they know that going to the Court of Arbitration for Sport (CAS) can be costly and time-consuming with no guarantee of success.
Johansson cannot be stuck in limbo for too long and the FAI are believed to be far from hopeful.
This case opens a window to the next wave of eligibility rows which go beyond Anglo-Irish relations, grandparent rules, and the cynical application of same - which the FAI has certainly exploited.
Luxembourg is a prime example of a country with a large ex-pat population and the issue of identity is far from black and white.
The matter now hinges on whether the return correspondence is enough to prompt a rethink. Johansson's future is out of his hands.