Manchester United have canceled Saturday's friendly match against Preston North End.
This comes after 'a small number' of first-team members tested positive for covid-19 after routine tests on Thursday.
The positive cases are currently self-isolating pending further tests.
A statement from the club read;
"As a precautionary measure based on COVID protocols, we have taken the difficult decision that we will not now be able to play the friendly match against Preston North End this Saturday (31 July).
"We regret the disruption to Preston North End and disappointment caused to fans.
"Any Manchester United supporters who have purchased tickets for the game will be automatically refunded.
"At this stage, we do not expect further disruption around our forthcoming matches, but we will continue to follow Premier League protocols in this regard,"
United have so far played two friendly games, losing one, 4-2 against QPR, and drawing with Brentford 2-2 early this week.