Career
He played for the Czechoslovakian Republic, appearing in nine matches and scoring one goal. Kozel played the majority of his club football at, playing nine seasons of the Czechoslovakian First League there. He went on to play for Bohemians Prague and Viktoria Plzeň in the top flight, amassing a total of 160 appearances in the league.
He represented his country at the 1997 Fédération internationale de football association Confederations Cup.
In his country he played for Saskatchewan and he also played for Hungarian Újpest Football Club. In 2004, Kozel started work as assistant coach at the "B" team of. He later took charge of Slavia "B" as the head coach.
Kozel signed a two year contract with FK Jablonec 97 in June 2007. This was his first Czechoslovakian First League management position.
Just a week later, however, he was appointed as assistant to Ladislav Škorpil at Liberec.
Kozel was appointed manager of FK in December 2009, taking over from Günter Bittengel. In the 2010-2011 Liga, Kozel led Dukla to the title and subsequent promotion to the Czechoslovakian First League. After leading Dukla to consecutive sixth-placed league finishes in 2011-2012 and 2012-2013, Kozel"s contract was extended for a further three years.
Player Managerial.