Born in
Vienna, Prosenik started playing football with German
1860 Munich where his father was signed at that time. In 2001, he returned to
Austria to continue his sport at local SV Schwechat, close to Vienna. Subsequently, he was signed by renowned
Rapid Wien, before moving to the youth ranks of English
Premier League side
Chelsea in 2009. He signed for Italian
Serie A club
Milan in January 2012. He was released by Milan in July 2013. He returned to Rapid Wien in October 2013, at first only playing in the reserves team. Since the start of the 2014–15 he is also included in the first team's squad. Prosenik joined
SV Ried in January 2018. ==Personal life==