The Uruguayan coach was given a fond farewell by the Doha outfit on Friday, who made headlines last week when they signed Spanish legend Raul from Schalke
Al Sadd, who signed Spanish legend Raul last week, had won the 2011 Asian crown under Fossati but endured a disappointing league season, finishing fourth, while they lost both of Heir Apparent Cup and Emir of Qatar Cup finals.
The 59-year-old Uruguayan has decided to leave the club, reportedly joining Paraguayan outfit Cerro Porteno.
Al Sadd held a farewell dinner on Friday for Fossati, who guided the club to a domestic sweep in a previous stint in the 2006-07 season.'
The club's head of football operations Mohamed Ghanim hailed Fossati's contribution at the club, having also guided them to third place at the 2011 Club World Cup.
“He is one of the best coaches Al Sadd have had. Nobody can match Fossati’s contribution to Al Sadd,” Ghanim told reporters.
Fossati revealed he had intended to leave the Doha outfit after the Club World Cup, but stayed on at the club's insistence.