Juventus striker Alvaro Morata has been sidelined for four weeks with a torn calf muscle.

The 22-year-old Spaniard suffered the problem during a training session on Tuesday.

Morata scored 15 goals for the Italian champions last season after joining the club from Real Madrid for nearly £16m.

"Alvaro Morata will be sidelined for up to 30 days after suffering a torn soleus muscle in his left calf during yesterday evening's training session," read a statement on Juve's official website. "Having departed the workout early, the striker underwent tests today in Shanghai to reveal the full extent of the damage."

Juventus are back in action on Saturday when they face Lazio in the Supercoppa Italiana.