Juventus coach Massimiliano Allegri admits victory over Bologna on Friday is a must.
Juve currently sit top of the table.
"The game against Bologna is crucial for the Scudetto," said Allegri.
"We could go four points above Napoli awaiting other matches.
“Bologna are good technically, they're a well-organised team. Since Donadoni arrived the collective has found balance, it'll be a difficult match.
“They're a team with nothing to lose, they're in a good position in the table and very enthusiastic.
“We're duty bound to come away with three points tomorrow. Napoli won't give us an inch and we need to stay out in front. We can't afford to get our approach wrong tomorrow."