Núñez is facing the prospect of a suspension issued by organisers CONMEBOL, the South American Confederation, which could extend to club football if world governing body FIFA decides to intervene should CONMEBOL apply any sanction.
Colombia secured a meeting with world champions Argentina in Sunday's final in Miami by defeating Uruguay 1-0 in the Bank of America Stadium in Charlotte, North Carolina.
But the postmatch incident when Núñez entered the stands to confront spectators has led to concerns that the 25-year-old could be hit with a lengthy ban for his actions.
Uruguayan newspaper El Pais has reported that the section Núñez entered also housed the friends and families of the Uruguay team, prompting Núñez to attempt to protect his family.
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