The Scot, who is happy that the player has recovered mentally from a worrying experience, said: “He’s had some further tests and will travel to London with us, and we will make a decision on that a little bit later.”
Moyes lost his temper after the 3-0 defeat at White Hart Lane when he was quizzed about Van Aanholt’s late withdrawal having claimed it was “for medical reasons.”
Spurs boss Mauricio Pochettino, meanwhile, admitted afterwards “it was strange”.
Even team-mate Lee Cattermole insisted he had no idea what was wrong with Van Aanholt.
“I don’t know anything about it,” said the Black Cats skipper.
“It was obviously a blow that we did not expect but it happens.”