Juventus named their squad to face Genoa tomorrow night, but Sami Khedira is out for two to three weeks.
The midweek Serie A round kicks off on Wednesday at 19.45 GMT, click here for a match preview.
The Bianconeri are already without Mario Mandzukic for a similar period of time due to a calf strain.
This evening it was announced Khedira had consistent pain in the right thigh after the 4-0 win over Chievo.
Tests showed a lesion to the long adductor and he is expected to be out of action for two to three weeks.
This effectively rules him out of the Scudetto showdown with Napoli on February 13 and possibly also the first leg of the Champions League Round of 16 against Bayern Munich.
Patrice Evra returns from suspension and Mario Lemina is back after injury, but Juve are missing Kwadwo Asamoah and Giorgio Chiellini.
Juventus squad for Genoa: Buffon, Caceres, Zaza, Marchisio, Morata, Pogba, Hernanes, Alex Sandro, Barzagli, Cuadrado, Lemina, Bonucci, Padoin, Dybala, Rugani, Neto, Lichtsteiner, Sturaro, Evra, Rubinho, Pereyra