The trio join Pablo Zabaleta in leaving after their contracts ended.
The 31-year-old's international career looks all but over.
The 28-year-old had joined Sadd from Romanian club Steaua Buchares last season.
Paul Pogba and Henrikh Mkhitaryan scored a goal in each half.
The Belgian signed a five-year deal reported to be worth 25 million euros.
The five-time World Player of the Year is unlikely to go to prison.
Al Sadd provide a sublime conclusion to a grand setting as they lift the Emir’s Cup for the 16th time.
The refurbished Khalifa International Stadium, which the Emir HH Sheikh Tamim bin Hamad Al Thani opened “in the name of every Qatari and Arab citizen”, offers a memorable experience to fans and players alike.
Lekhwiya midfielder Nam Tae-Hee and Al Sadd coach Jesualdo Ferreira bag top honours at the Qatar Football Association Awards.
Ex-FIFA marketing director Thierry Weil speaks about sponsorship strategies, Josoor Institute, importance of nurturing specialists in sports industry and possible challenges for Qatar as the 2022 World Cup host.
JESUALDO Ferreira’s Al Sadd were in danger of finishing a second consecutive season without a trophy when they narrowly lost out to Lekhwiya in the Qatar Stars League title race.
Qasim Burhan saves a penalty as Lekhwiya hold Persepolis goalless in their AFC Champions League pre-quarterfinal first leg in Tehran.
AL AHLI are planning to sign former Asian Player of the Year Khalfan Ibrahim from their Qatar Stars League (QSL) rivals Al Sadd.