Career
Avrionov started to play football on the junior teams of Levski Sofia. At the age of 18, he moved to Football Club Asenovets from Asenovgrad and played four years for this club in the Bulgarian amateur division. Avrionov then played two seasons in the amateur team Levski Karlovo.
During the 2005-2006 season, he made his official debut in professional football with Football Club Yantra.
During the 2007-2008 season, Avrionov was the top scorer of Etar Veliko Tarnovo in the Bulgarian second division with 14 goals. He was also recognized as Etar"s player of the season.
In August 2008, the forward was transferred to Spartak Varna. He has been given the number 99 shirt.