Mario Brkljača

Zagreb is the capital and largest city of Croatia. It is in the northwest of the country, along the Sava river, at the southern slopes of the Medvednica mountain. Zagreb stands near the international border between Croatia and Slovenia at an elevation of approximately 122 m (400 ft) above sea level. The population of the Zagreb urban agglomeration is 1,071,150, approximately a quarter of the total population of Croatia, while at the 2021 census the city itself had a population of 767,131.

Nogometni klub Zagreb, commonly known as NK Zagreb or simply Zagreb, is a Croatian amateur football club based in the Croatian capital city of Zagreb. It currently competes in the fifth tier league competition of Croatian football league system, Četvrta nogometna liga Središte Zagreb podskupina A in Croatian since the 2021–22 season and the revision of league in preparation for structure reorganization in a men's league system of Croatian football league system starting from 2022–23 which also led to labeling changes for the league levels.

Hrvatski nogometni klub Hajduk Split, commonly referred to as Hajduk Split or simply Hajduk, is a Croatian professional football club based in Split, that competes in the Croatian First League, the top tier in Croatian football. Since 1979, the club's home ground has been the 34,198-seater Stadion Poljud. The team's traditional home colours are white shirts with blue shorts and blue socks.

Cagliari Calcio, commonly referred to as Cagliari, is an Italian football club based in Cagliari, Sardinia. In the 2022-23 season, they compete in Serie B. As of 2021–22, the team is temporarily playing their home games at the 16,416-seat Unipol Domus, adjacent to their future new stadium site.

CSKA Sofia is a Bulgarian professional association football club based in Sofia and currently competing in the country's premier football competition, the First League. CSKA is an abbreviation for Central Sports Club of the Army.

Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. Bulgaria covers a territory of 110,994 square kilometres (42,855 sq mi), and is the sixteenth-largest country in Europe. Sofia is the nation's capital and largest city; other major cities are Plovdiv, Varna and Burgas.