Chelsea are facing complications in selling tickets to supporters with American Express still freezing ties with the club while there are sanctions on Russian owner Roman Abramovich.
Last week, the British government revised the terms of the license Chelsea are operating under to allow them to sell tickets to fans for upcoming games while Abramovich remains the club's owner, despite being under a raft of sanctions.
It means Chelsea supporters can buy tickets for their quarter-final Champions League tie against Real Madrid and their FA Cup semi-final against Crystal Palace at Wembley on April 17.