Son missed several chances as South Korea were beaten 1-0 by Honduras in the quarterfinals.
Brazil Olympic team stars Neymar, Gabriel Jesus, Gabigol and four others were included on Brazil's World Cup qualifying squad.
Robert Bauer has apologised for making a gesture referencing Germany's 7-1 victory over Brazil after suffering defeat in the Olympic final.
Team GB could again take part in the football tournament at the next Olympic Games, according to the British Olympic Association's chief executive.
Neymar has a new Olympics tattoo to mark Brazil winning gold.
Michael Eaves reports from Rio, where Brazil won their first Olympic gold medal for soccer, on how the country has reacted.