Scott McTominay and Christian Eriksen missed Manchester United's 3-0 League Cup win over Crystal Palace through illness.
United named two goalkeepers on the bench for the third round stroll while teenager Dan Gore came on for his debut and Donny van de Beek had a rare outing.
Left-back Sergio Reguilon missed the tie as he has been unwell and has not been into United's Carrington training complex in recent days as the club attempt to avoid a spread.
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Eriksen and McTominay reported for training on Tuesday and it is unclear if they will regain fitness in time for the rematch with Palace at Old Trafford in the Premier League on Saturday.
United welcomed back Mason Mount in their victory on Tuesday evening while Raphael Varane and Sofyan Amrabat both played for an hour, having overcome recent injuries.
Luke Shaw, Tyrell Malacia and Aaron Wan-Bissaka are long-term absentees while Lisandro Martinez has been troubled by a foot injury but it is not thought to be major.
Winger Amad is recovering from a knee injury while midfielder Kobbie Mainoo has been training separately as he continues his rehabilitation from an ankle injury.
Jadon Sancho has missed the last four matches due to a disciplinary issue while Antony unavailable indefinitely.
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