Career
Dreven is currently playing for NK Zavrč. Varaždin
Hailing from Trnovec Bartolovečki, he was a product of the NK Varaždin youth academy and joined the first team in 2009 as a 19-year-old. His debut for Varaždin in the Prva HNL came in a 0–0 draw on 22 November 2009 against NK Slaven Koprivnica.
He left the team in 2012.
Tampines Rovers
He joined the Singaporean side in 2012 on a free transfer. His debut came on 12 February 2012 against DPMM Football Club in a 2–2 draw.
At the end of the season he was released. Return to Croatia
Dreven returned to Croatia in the summer of 2013, joining the third tier side NK Podravina from Ludbreg, making a mark by scoring from a penalty as well.
During the winter break, he made his return to Prva HNL signing a 2 1⁄2-year contract with NK Istra 1961.
