Alberto Zaccheroni says he will discuss his future with the Japan Football Association after their World Cup failure.
The Blue Samurai claimed just one point from their three fixtures as they finished bottom of Group C.
Zaccheroni’s side still had a chance to progress when they lined up against Colombia in Cuiaba on Tuesday night and despite falling behind to a Juan Cuadrado penalty, they equalized when Shinji Okazaki headed home in first-half stoppage time.
However, their quest for a winning goal left them wide open at the back and two goals from Jackson Martinez and another from substitute James Rodriguez gave the South Americans a 4-1 victory, with Greece beating Ivory Coast 2-1 in Fortaleza to go through as Group C runners-up.
Zaccheroni admitted his players, who lost 2-1 to Ivory Coast before drawing 0-0 with Greece, had performed well below par in Brazil.
"In general terms, we all thought we would play a lot better," said the 61-year-old Italian.