Ralf Rangnick revealed he could not call upon Jesse Lingard in Manchester United's 1-1 draw with Leicester City due to being sick.
The 29-year-old was an unused substitute - despite being one of only two attacking options on the bench for the Foxes clash at Old Trafford.
The Red Devils were already without star Cristiano Ronaldo through illness and Edinson Cavani through injury.
Marcus Rashford came off the bench in the 55th minute to replace Scott McTominay while Lingard remained on the sidelines.