Juventus are sweating over the fitness of Alberto Aquilani after he pulled up with an injury against Genoa on Sunday.
The Italy international midfielder asked to be substituted after feeling a pain in his thigh.
"I preferred not to risk it," Aquilani said. "I felt a pain in the quadriceps.
"Seeing that Gigi Del Neri only had one change left, I tried to limit the damage.
"I hope it was only cramp.
"Tests will be carried out on Tuesday to ascertain the problem."
Think you know your Italian football? Share your knowledge, tips and comments to win cash prizes in OLBG's tipster competition  - £5,000 monthly.