[1] After spending the entirety of his career with SV Mattersburg since his debut in 2009, Farkas joined Austrian giants Red Bull Salzburg in the summer of 2017 and signed a three-year contract.

[2] In his first year at the club, Farkas made 16 league appearances and scored one goal as Salzburg won their fifth Austrian Football Bundesliga title in a row.

[3] Farkas was dismissed early in the second half for a second yellow card, but Salzburg held on for the win and lifted the trophy to secure a domestic double.

[3] On 19 July 2019, Farkas made his season debut in a match against Parndorf in the first round of the 2019–20 Austrian Cup; he scored two goals as Salzburg ran out 7–1 winners over the fourth division side.

[6] In a video posted to the club's social media channels, Farkas said that he collapsed due to a hole in his heart caused the stroke when a blood clot shot to his brain.