Chelsea suffered 1-2 defeat at the hands of Liverpool in a Premier League clash on Sunday.
India are now certain to win the women's team trophy despite not fielding a wrestler in the 49kg weight class.
Amorim's delay to join leaves Van Nistelrooy in charge at least for this weekend's visit by Chelsea, the Europa League home match to PAOK, and another clash with Leicester.
The Pro Kabaddi League season 11 will return to the three-city caravan, with Hyderabad, Noida and Pune set to host the league phase.
Kylian Mbappe has denounced the report as "fake news".