Chelsea's home game with West Ham on Sunday has been moved forward to Saturday by the Premier League following the Champions League draw.
It will now take place on Saturday at 15:00 because the Blues face Dinamo Zagreb in Croatia in the Champions League on 6 September.
Chelsea and West Ham United fan groups described the late date change as "totally unacceptable".
"The lack of planning and foresight has had an awful impact on supporters," said a joint statement issued by the Chelsea Supporters' Trust and the West Ham United Supporters' Trust.
"Tickets have been bought, accommodation has been booked, travel has been paid for and plans have been confirmed.