Jesse Lingard is set to miss the start of the new season having tested positive for Covid-19.
Lingard, 28, had featured in all three of Manchester United's pre-season friendly fixtures but is not available for the final test against Everton on Saturday lunchtime.
United confirmed his absence in a statement on their club website ahead of kick-off although there is no time frame given over his possible return.
"Unfortunately, Jesse Lingard is unavailable after testing positive for Covid-19," the statement read. "He is isolating in line with Government and Premier League Guidelines."
Lingard's lay-off is the latest setback for United ahead of the new season as goalkeeper Dean Henderson is still recovering from Covid-19.
Henderson, 24, reported for pre-season training three weeks ago but is understood to have tested positive for Covid-19 later that week and missed the friendlies with Derby County, Queens Park Rangers and Brentford.
United also confirmed Harry Maguire, Luke Shaw and Anthony Martial will all start in the pre-season friendly against Everton.
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