Borussia Dortmund midfielder Shinji Kagawa refused to comment on the match-fixing scandal engulfing Japan coach Javier Aguirre as he arrived back in Japan on Monday to prepare for the Asian Cup.
Kagawa signed autographs for fans at Tokyo's Haneda airport but would not respond to questions about Aguirre from waiting reporters. Schalke defender Atsuto Uchida also arrived in Japan on the same flight.
Mexican coach Aguirre has not appeared in public since Spanish prosecutors named him among 41 individuals last week in a report into the alleged rigging of a La Liga clash between Levante and his former club Zaragoza in May 2011.