The 33-year-old was one of four men brought in on the final day of the transfer window, where he put pen to paper on a one-year deal with United.
Edinson Cavani completed a deadline day move to Utd but could be made to wait for his debut
Under UK government guidelines, anyone arriving in the UK from France will have to quarantine for 14 days, which would put Cavani at risk of delaying his debut.
Now having to self-isolate at home for a fortnight, it would mean Cavani completing his quarantine period the day after United face Newcastle.
More to follow