From the little research I have done on Bulgaria, I could deduce that the government of Bulgaria holds no law or restrictions on Crypto transactions and as a matter of fact organisations and individuals are fully into crypto currency and are accepting Bitcoin for payment of goods and services. Further findings shows that 213,519 BTC was seized held in the custody of the Bulgarian government.
With the above, I have no doubt about the possibility of this club accepting Bitcoin for payment of tickets to watch their live matches and also to pay for this Jersey's beautifully designed. I see and applaud them for this singular act they have done by making their intentions towards Bitcoin been known. I believe this is a big step to creating awareness about Bitcoin in their country not just their country alone but other countries that they have a good fan base.