What happens if a player does not declare a nationality after being summoned?

If a player does not declare a nationality after being summoned, the correct outcome is that they can choose only the other country. This is tied to the regulations governing player eligibility in international basketball. When a player is called up for national team duties, they must specify their nationality to represent a specific country. If they fail to declare, it typically limits their options to playing for one national team or the other, depending on their original nationality. Consequently, they are not free to represent any team but are restricted to the remaining option that adheres to FIBA's eligibility rules. This limitation is designed to maintain the integrity of international competition and player commitments to their respective national teams.