Two weeks ago, Victor Nilsson Lindelöf was replaced with chest pain in the meeting with Norwich.
He was declared healthy shortly afterwards and tonight the return could have taken place.
Then Manchester United play away against Newcastle.
But the Swede is missing in the match squad.
Coach Ralf Ragnick tells Sky Sports that Lindelöf has tested positive for covid-19.
- Unfortunately he tested positive yesterday, so he can not play, says Ragnick to the club's website.