Juventus midfielder Mohamed Sissoko will miss the rest of the season after ndergoing arthroscopic surgery to remove damaged cartilage in his left knee.
Sissoko, 26, has struggled with knee problems for several months but has nonetheless made 19 appearances for the Bianconeri this season.
A statement from Juventus read: "The operation was done in Bordeaux by Dr Jambou and Sissoko is expected to return in three months' time.''
Salihamidzic sustained a thigh problem in Tuesday's training session while Aquilani has yet to recover from a muscle injury.
Juve have lost four of their last six league games and head into this weekend's showdown in seventh position in Serie A, 17 points behind league leaders Milan.