The Red Devils have had clashes with Brentford and Brighton called off after they were left with just seven available players.
Their Carrington training ground was also shut for a second time to try and prevent further transmission.
Now Ralf Rangnick's squad have been given the green light to return as they begin to prepare for next week's Premier League match at Newcastle.
However, not everyone was there for long - in fact three of their stars were only in attendance for ten minutes.
Captain Harry Maguire seemed pleased to be back as he produced a wave upon arrival into the HQ.
United's boss Rangnick was spotted in the back seat of a vehicle with a mask on along with another staff member.
However, not all of United's players were in attendance.
Cristiano Ronaldo, Donny van de Beek, Paul Pogba, Diogo Dalot, Jadon Sancho, Phil Jones, Tom Heaton, and Dean Henderson were all not spotted
United players leave training 10mins after arrival
👤ISRAEL 📅22-12-2021 20:12
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