 Srnić was molded in Red Star's youth system, and some observers in Serbian football had referred to young Slavoljub as "Ognjen Koroman's student".Coach Aleksandar Kristić selected Srnić to make his professional debut for Red Star Belgrade on November 6, 2010 in a SuperLiga match against OFK Beograd.The Srnić brothers were then loaned to Red Star's farm team, FK Sopot.