Sadik was born in Skopje, SR Macedonia, then still part of former Yugoslavia, on 14 September 1986 to Albanian parents and moved to Finland with his family at the age of three.

Also Ascoli, Torino, Larissa, Örebro and Rosenborg were interested to sign Sadik.

[5] After just one year, he left Arminia Bielefeld, where he played only thirteen games, and joined SV Zulte Waregem on loan for 10 months.

On 22 January 2019, Sadik signed an 18-month deal with Segunda División side Gimnàstic de Tarragona.

[7] Sadik debuted for Finland national football team against Turkey on 29 May 2008.