Enzo Fernandez has apologised to several French players in the Chelsea squad after being accused of "uninhibited racism" by team-mate Wesley Fofana.
The Argentina international, 23, landed in Atlanta in the United States and addressed the video posted to his social media account after Argentina beat Colombia 1-0 in the Copa America final on 14 July.
The video featured a song sung by some of the Argentina squad about France's black players, which the French Football Federation said included an alleged "racist and discriminatory" chant.
A complaint was made to world governing body Fifa, while Chelsea instigated an internal disciplinary procedure which is now closed.