[2] On February 8, 2022, Islam Merili signed a two-year and a half contract with USM Alger.
Free from any commitment, he was coveted by several clubs, notably MC Alger, but Merili opted for L'USMA after an agreement with sports director Hocine Achiou.
Usmist supporters have no idea about the new recruit and they expect to see him form a good duo with Brahim Benzaza after playing together for several seasons with ASO Chlef.
[3][4] On November 9, 2022, Minutes after he came on as a substitute, Merili scored the winning goal against Cape Town City, as the first goal in the colors of USM Alger and qualified for the group stage of the CAF Confederation Cup.
[5] On June 3, 2023, Merili won the first title in his football career by winning the 2022–23 CAF Confederation Cup after defeating Young Africans of Tanzania.