Leonardo Bonucci may miss out on Juventus' trip to Chievo on Sunday after suffering a recurrence of a thigh injury.
Bonucci, 29, was forced off with the problem during Juve's 1-1 Champions League draw with Lyon on Wednesday.
The Italy international underwent tests on the injury and is now a doubt for the weekend's Serie A clash at the Stadio Marc'Antonio Bentegodi.
"Having been substituted in the second half of Wednesday's draw with Les Gones, Leonardo Bonucci underwent tests which revealed a recurrence of an injury previously sustained to his left thigh," a Juve statement read.
"The defender's condition will be monitored closely again tomorrow."
Juventus are four points clear at the top of Serie A going into Sunday's game, with Chievo sitting in 11th place.