Premier League club Chelsea have asked foreign-based players to return to England by Sunday.
A number of players were allowed to travel to their native countries after the Covid-19 pandemic led to suspension of football in England in March 13th.
Brazilian midfielder Willian, full-back Emerson and midfielder Pulisic are believed to have returned their home countries.
The club will give some players flexibility if they cannot make it to England by Sunday as travel arrangements may be difficult.
The players will be expected to quarantine themselves for 14 days upon returning to Britain as a measure to curb the spread of coronavirus.
The Premier League is exploring options of resuming the season in June and Chelsea want to prepare should the green light be given.
Arsenal, West Ham and Brighton and Hove Albion have already opened their training grounds and players are training individually at the moment.
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