FIFA's nationality rules are under scrutiny as Inter Milan striker Ange-Yoan Bonny becomes the latest player to switch nations, moving from France to Ivory Coast for this summer's World Cup tournament. Players must meet specific eligibility requirements to represent their new country on the international stage, particularly when joining a nation already qualified for major tournaments.

The most significant rule change came in 2021, allowing players with up to three senior international caps before turning 21 to switch nations. This marked a departure from previous regulations that prohibited switching after earning caps in competitive matches. England's Declan Rice utilized this provision when changing from Republic of Ireland to England in 2019 after accumulating three friendly caps.

Former Chelsea striker Diego Costa similarly swapped from Brazil to Spain in 2014 after appearing in friendly matches only. These cases demonstrate how the evolving regulations continue to shape international football rosters, creating opportunities for players to represent nations where they hold stronger cultural or competitive ties.