Vincenzo Iaquinta has been ruled out until the end of the season after suffering an injury in training on Thursday.
The World Cup winner has torn his femoral muscle and faces another prolonged spell on the sidelines at Vinovo.
Scans suggest Iaquinta will be out for at least three months, robbing Juventus of yet another player for the run-in.
Jorge Martinez, Luca Toni and Armand Traore are all on the road to recovery, but Felipe Melo will miss Sunday's match with an ankle injury.
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