By Bobbie Jackson
Copyright bbc
Benfica also travel to Newcastle and host another of his former teams Real Madrid later in the league phase of the competition.
They finished second in the Portuguese top flight last season and last won the title in 2022-23.
Mourinho endured a turbulent time in Turkey and was often at odds with the standard of refereeing.
In November, Mourinho blamed Fenerbahce for only telling him “half of the truth” about the level of officiating and said referee Atilla Karaoglan was “man of the match” after his side scored late to beat Trabzonspor.
He filed a lawsuit against rival club Galatasaray in February after they accused him of making racist statements.