Juventus conceded their place in Serie A's Champions League positions on Wednesday after falling to a 1-0 defeat at Parma, one of four matches rescheduled from Monday following the death of Pope Francis.
Juventus, who are just a point below fourth-placed Bologna, visit Roma on Sunday.
Thiago Motta was sacked as Juventus coach on Sunday after less than one season in charge with former player Igor Tudor replacing him, the Italian giants announced.
Francisco Conceicao made sure that Napoli would stay two points ahead of reigning champions Inter by classily tucking home the winning goal 16 minutes before the end of an entertaining contest in Turin.
Inter Milan could be without French forward Marcus Thuram due to an injury as they prepare for a tough outing against Juventus at the Allianz Stadium on Sunday, manager Simone Inzaghi said on the eve of the Serie A clash.
Samuel Mbangula boosted Juventus' chances of reaching the last 16 of the Champions League by netting the late winner in Tuesday's 2-1 success over PSV Eindhoven in Turin.
The victory, provisionally, leaves Juventus level on points with champions Inter Milan in second and one behind league leaders Napoli.
The record 36-time champions trail second-placed Inter Milan on goal difference after Maduka Okoye's own goal and Nicola Savona's effort.
Manager Thiago Motta acknowledged that Juventus are not in the Serie A title race just yet and emphasised the importance of maintaining focus on their growth after they secured a dramatic 4-4 draw with champions Inter Milan thanks to two late goals on Sunday.
Massimiliano Allegri was sacked by Juventus on Friday after exploding with anger during his team's midweek Italian Cup triumph.
Dusan Vlahovic shot Juventus to the Italian Cup with the only goal in Wednesday's final against Atalanta who were denied a first trophy in six decades.
Stefano Pioli is close to guaranteeing Milan, in second, a spot in Europe's top club competition in what will almost certainly be his final season at the club
Arkadiusz Milik's late strike helped Juventus reach the Italian Cup final on Tuesday with a 3-2 aggregate win over Lazio despite losing a tense second leg 2-1.
The Portuguese, who now plays for Saudi side Al-Nassr, had claimed he was owed around 19.5 million euros ($20.81 million) of outstanding wages by his former club relating to a paycut agreed during the COVID-19 pandemic.
Former Brazil international footballer Dani Alves is to be released from jail pending an appeal against his rape conviction in exchange for posting bail of one million euros ($1.08 million), a Barcelona court said Wednesday.
France star Paul Pogba has been given a four-year ban from football by Italy's anti-doping tribunal after testing positive for testosterone last August, his club Juventus said on Thursday.
Juve's title hopes took a hit at the Allianz Stadium in Turin after Lautaro Giannetti poked home the only goal of the game in the 25th minute.
Marcus Thuram was key to Inter's win at a soaking Stadio Olimpico in Rome as, with his team trailing at half-time, the France attacker made it two goals each shortly after the break and forced the Angelino own goal which put Inter ahead in the 56th minute.
Simone Inzaghi's side prevailed in a tense but eventful clash at the San Siro thanks to Federico Gatti's own goal eight minutes before half-time