Antonio Conte’s side were drawn to face cross-town rivals West Ham in the fourth round of the competition.
However, the clash at the London Stadium on October 26 is facing an array of issues - mostly for the visitors.
Blues fans have been unable to buy tickets yet, despite the tie being less than two weeks away.
And according to the Daily Mail, Chelsea have been left feeling frustrated by the situation.
West Ham's London Stadium opener in pictures
Thu, August 4, 2016Click through the gallery for the best snaps from West Ham's opening night at the London Stadium.
Click through the gallery for the best snaps of West Ham's London Stadium opener
Security problems and safety fears have seen West Ham willing to give the Blues less than their full allocation of seats.
Up to 10 per cent of the capacity can be claimed by visitors in the cup, which would see Chelsea have 5,700 of the 57,000-seater stadium.
But due to the infrastructure of the venue, West Ham are restricted to hosting only 5,200.
The __football League are taking some time to approve the reduction, which is apparently expected to be granted at a meeting today.
However, Chelsea fans will be left with little time to organise themselves for the fixture should they eventually pick up tickets.
The draw was made three weeks ago, and West Ham supporters have been able to purchase their seats already.
To avoid Chelsea fans taking tickets in the home section too, the Hammers are only selling to people who can show they’ve bought tickets within the past five years.
Police are still not going to be inside the ground either due to the radio signal problems, but there will be a presence outside in case of any potential trouble.