Frank Lampard has revealed that Chelsea had 10 or more players forced into quarantine during the club's pre-season.
As the Blues ramped up preperations for the new campaign, some players including Christian Pulisic, Tammy Abraham, Mason Mount, Fikayo Tomori and Emerson Palmieri were required to isolate amid the Covid-19 pandemic.
A number of players were forced to miss Chelsea's only pre-season friendly match as clubs dealt with a gap of just over a month between Premier League seasons.
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As Chelsea prepare to kick off their Premier League campaign on Monday against Brighton, Blues manager Lampard was critical of Uefa's decision to put Nations League fixtures ahead of the new season and detailed his club's unsettled pre-season preparations.