Juventus playmaker Andrea Pirlo will be sidelined for three weeks with a right calf injury.
The Italy international suffered the injury during Juve's 2-1 Champions League last-16 first-leg triumph over Borussia Dortmund on Tuesday.
Pirlo underwent tests on Thursday which confirmed muscle damage.
A statement from Juventus read: "Andrea Pirlo has undergone tests this morning which have revealed a first degree lesion of his calf muscle in his right leg.
"The estimated time of complete recovery is...