Juventus will be without Andrea Pirlo for the rest of 2013, as he has damaged knee ligaments.
The midfielder limped off just 15 minutes into Sunday’s 1-0 win over Udinese  in Turin.
Tests have now confirmed a second degree lesion to the collateral medial ligament in his right knee.
The Juve medics have not stated how long he will be out for, but an injury of this type usually requires at least a month to heal, possibly two.
It is a heavy blow for the Bianconeri, who are top of the Serie A table and need a point away to Galatasaray in order to qualify for the Champions League knockouts.
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