The Brazil international could increase the options available to manager Erik ten Hag for the third-round encounter at Old Trafford, which kicks off on Friday at 20:00 GMT.
The boss revealed that the winger missed the 3-0 victory over Bournemouth due to injury, with Marcus Rashford back in the starting line-up and Bruno Fernandes operating on the other flank. Donny van de Beek performed in the middle of the park, but was withdrawn with a serious-looking problem that caused Ten Hag some concern afterwards.
Antony made a superb start to life at United by scoring in his opening three Premier League matches for the Reds, and one of those came against Everton.