On 30 January 2018, Sadiku joined Belgian First Division A side Mouscron after agreeing to a four-year deal.
[2][3] On 5 May 2019, he made his debut as a professional footballer in a 3–0 home win against Zulte Waregem after being named in the starting line-up.
[7] On 5 August 2020, Sadiku left Mladot Doboj Kakanj and joined Zrinjski Mostar, signing a three-year contract.
[8] He made his official debut for Zrinjski on 12 September 2020, in a league match against his former club Mladost Doboj Kakanj.
[13] Sadiku was born in Sarajevo, Bosnia and Herzegovina, to Kosovan parents from the village Radeše of Dragaš.