Al Sailiya, coached by Sami Trabelsi, said the 31-year-old attacking midfielder will be part of the pre-season training camp in Tunisia starting next week.

Youssef has appeared for Al Jazeera and Al Wehdat over the course of last three seasons.

Earlier Al Sailiya signed Rachid Tiberkanine of Morocco. Trabelsi's side also has the services of Algerian midfielder Nadir Belhadj, formerly of Al Sadd. 

Al Sailiya will leave for Tunisia for a pre-season training camp before returning to Doha for the start of the new season. The training camp will be based in Tabarka.

Al Sailiya finished sixth (28 points) in the last season after remaining in fourth spot for many weeks. 

Coach Trabelsi will be looking at a top-four finish in the 2018-19 season that kicks off on August 4.