Arna began playing with the youth clubs of Fenerbahçe, at the age of 7.[1]
Professional career
Arna began his pro career in 2015, with the senior men's club of Fenerbahçe. On 10 May 2019 Arna scored 51 points and had 14 rebounds in a 138–62 away win over Sakarya BB. Arna shot 20-31 from the field, while shooting on 10-16 three point field goals. He set a season-high for points scored in the 2018–19 Basketbol Süper Ligi.[2] On 7 July 2020 Arna was released from the Turkish powerhouse.
Arna signed a two-year deal with Beşiktaş on 6 August 2020.[3]