The boss held his pre-match press conference at Carrington and was, naturally, quizzed on his selection options for the clash with Pep Guardiola's unbeaten Blues.
Strikers Anthony Martial and Marcus Rashford have both been sidelined with injury, while Harry Maguire was flagged as a doubt after his time away with England. Martin Dubravka was forced to withdraw from the Slovakia squad during the break, while defenders Brandon Williams and Axel Tuanzebe have been out all season.
Ten Hag confirmed Maguire is injured but Martial and Rashford are back in training, and could yet feature in the 14:00 BST kick-off.