Bruno Fernandes and Marcus Rashford were not fit enough to be part of the squad, while Amad and Jonny Evans were substituted during the second half, and Scott McTominay played the full game despite also appearing to be struggling.
The game was settled by Leandro Trossard's 20th-minute goal, after Kai Havertz was played onside.
Ten Hag said that, other than that mistake, his side executed his instructions well and he saw a lot to be positive about, even if we could not find a way past the league's best defence.
Read the boss's key quotes, given to MUTV, Sky Sports and the media, after the final whistle.