Following the conclusion of his loan to Austria Lustenau, Schreiner spent a year with LASK Linz, before being sold to SV Ried. His league debut for the club came on 16 July 2011 in a 1–1 home draw with SK Sturm Graz. He was subbed on for Daniel Royer in the 91st minute.
In July 2013, Schreiner moved to then 1. Liga club SCR Altach. He made his league debut for the club on 19 July 2013 in a 3–2 home victory over SV Horn. He scored his first league goal for the club on 22 November 2013 in a 4–1 home victory over SC-ESV Parndorf 1919. His goal, the second of the match, came in the 7th minute.