Inter Milan and Juventus face off on Sunday in a clash between Serie A's two title favourites and historic rivals, as Walter Mazzarri begins his second reign at troubled Napoli.

Napoli continued their struggles on home turf with Sunday's shock 1-0 defeat to Empoli which left the Serie A champions already well off the pace in this season's title race.

Napoli winger Matteo Politano and forward Giacomo Raspadori both scored after the break to cancel out two first-half headers by Olivier Giroud in an energetic game that saw the two teams dominate one half each.

Argentina striker Martinez nodded home his 11th league goal of the season in the 67th minute of a straightforward win in Turin as Inter went one point ahead of AC Milan, who host third-placed Juventus on Sunday night.

Italian club Juventus' midfielder Nicolo Fagioli is under investigation for alleged illegal betting activities, a prosecutor said on Wednesday, confirming earlier press reports.

 Bologna fought back from two goals down to snatch a 2-2 draw with Inter Milan at the San Siro in Serie A on Saturday after early goals from Francesco Acerbi and captain Lautaro Martinez had put the hosts in command.

Lukaku grabbed his third goal in five league games for Roma after latching onto a clever pass from Paulo Dybala midway through the first half.

Inter rebounded from their first loss of the season midweek against Sassuolo thanks to a sensational second-half display from Martinez.

Portugal winger Leao netted his third goal in as many league matches in the eighth minute at a sodden San Siro to move Milan up to second on 12 points from five games

Stefano Pioli insisted on Monday that AC Milan have turned their attentions to the Champions League opener with Newcastle United after the local derby humiliation at the weekend.

Belgium forward Lukaku rolled in Roma's sixth in the 82nd minute of a dominating performance in which talisman Paulo Dybala also got off the mark for the season with a brace.

Inter Milan laid down an early title marker on Saturday by handing out a 5-1 derby hammering to AC Milan and going it alone at the Serie A summit, while champions Napoli were held 2-2 at promoted Genoa.

Italy's Milan giants face off in Saturday's local derby which pits Serie A's form teams against one another in a match which will give an early indication of their title credentials..

Leonardo Bonucci has confirmed that he is taking legal action against Juventus, claiming that the Serie A club has not told the truth about their treatment of him after he was frozen out and eventually sold over the summer.

Inter Milan coach Simone Inzaghi has signed a new contract that will keep him at the club until 2025, the Serie A side said on Tuesday.

European heavyweights will be on their toes to execute eleventh-hour acquisitions as the summer transfer window for Europe's top five leagues is set to close tonight, from 10pm to 4am (Bangladesh Standard Time).

Right wing back Denzel Dumfries ran onto a cunning through ball by Marcus Thuram after 21 minutes and placed a low cross-shot past goalie Boris Radunovic

Victor Osimhen netted his third goal of the season from the penalty spot 15 minutes into Napoli's first home match since lifting the league title in front of their fans for the third time back in June.

Victor Osimhen started where he left off for Napoli with a brace in Saturday's 3-1 victory at promoted Frosinone which gave the champions a winning start to their Serie A title defence.

Napoli ended their 33-year wait for a Serie A title last season in spectacular fashion by securing it with five games to spare, but with new management and recent history against them, retaining it could be a very tough task. They begin their title defence at promoted Frosinone on Saturday.