Bologna will be without Gary Medel for at least a month after he sustained a lesion to the soleus muscle.
The Chile international has had a very difficult campaign due to a series of injury problems.
This is the latest setback, as a statement released by the club confirmed Medel has been diagnosed with a Grade I lesion to the soleus muscle in his right leg.
The recovery time predicted by the Bologna medical staff is circa one month.
Medel has made only 10 Serie A appearances, plus one in the Coppa Italia, so far this season.