Mario Kirev

Youth career

Kirev began his career at FC Germanea. His first coach was Georgi Stanchev. At the age of fourteen, he began training with the junior team of Slavia Sofia.

Slavia Sofia

In August 2007 Kirev signed his first professional contract with Slavia. He made his competitive debut for the club on 25 April 2008 against Spartak Varna in the twenty five round of the Bulgarian top division. In next season (2008–09) Kirev was the first choice for goalkeeper of the coach Stevica Kuzmanovski. He earned 7 appearances playing in the A PFG.

Juventus

In December 2008, Kirev was invited by Serie A side Juventus to join trial period. On 30 January 2009, he signed a four-and-a-half-year contract. In the following days Kirev was loaned for six months in the Swiss team Grasshopper Club Zürich. On 1 July 2009, he returned to Juventus. He was included in the Primavera squad that winning a second consecutive Torneo di Viareggio. However, he was the third keeper in the final. In February 2010, Kirev signed for FC Thun in Switzerland, in an attempt to gain first team experience. On 1 July 2010, Kirev returned to Juventus and became the 5th keeper, behind injured Buffon, new signing Marco Storari, Alex Manninger and new signing Marco Costantino. He was called up to the first team, for the first time on 29 October 2010, against Milan. In September 2011, Kirev joined Romanian Liga II side Politehnica Timișoara on a season long loan deal. He returned to Juventus on…

In August 2008 Mario became part of the Bulgaria national under-21 football team and he was at the time the only player on the team playing his trade outside of Bulgaria.