He scored a goal on his professional debut for the club from Novi Sad at the age of 18 in a match against OFK Beograd on 11 April 2010.
In advance of his promotion to the club, he had chosen the number 91 to represent the team's historic win against Olympique Marseille in the 1991 European Cup Final.
[5] On 2 September 2012, he scored a hat-trick against Radnički Niš on his debut for Red Star, becoming the first player in club history to do so.
[10] After he made just one appearance, scoring a goal in DFB-Pokal match against SV Waldkirch at the beginning of the 2014–15 season, Mudrinski moved to Switzerland.
[13] For the spring half of the 2015–16 Serbian SuperLiga season, Mudrinski played 13 league matches, mostly as a back-up option, and scored 2 goals.
[16] On 25 July 2017, Mudrinski signed a three-year contract with Čukarički,[17] with his transfer from Spartak Subotica costing €200,000.