Career
A product of FSV Frankfurt"s youth academy, Slišković made his professional debut on 29 January 2011 for Mainz 05 against 1. Football Club Kaiserslautern. On 31 August 2011, Slišković was loaned to second division side Saint Pauli., and a year later he joined Dynamo Dresden on a season-long loan. He returned to Mainz in January 2013, six months early.
In February 2015, he left Mainz for good and joined Swiss Super League side Football Club Aarau on a one-and-a-half-year deal until 2016.