Cristiano Ronaldo is set for a rare start on the bench as Juventus host struggling Frosinone on Friday looking to pull 14 points clear in Serie A with an eye towards next week’s Champions League trip to Atletico Madrid.

Portuguese star Ronaldo brought his tally to 20 goals for Juventus in all competitions last weekend in a 3-0 win over Sassuolo. But the 34-year-old will start on the bench for just the second time this season before the former Real Madrid player returns to the Spanish capital next week.

Juventus coach Massimiliano Allegri’s defensive problems have been eased with trio Andrea Barzagli, Leonardo Bonucci and Giorgio Chiellini back training.Second-placed Napoli dropped points last weekend with a goalless draw against Fiorentina and face a potentially tricky test at home against Torino.

Icardi’s contractual situation, with his current deal expiring in 2021, has become an increasingly divisive issue between club bosses and the player’s wife Wanda Nara, who is also his agent.

Napoli will be without midfielder Marek Hamsik for the first time since the former skipper having sealed his move to Chinese Super League club Dalian Yifang.Lorenzo Insigne takes on the captain’s role and insisted motivation remained high despite Juventus’ charge towards an eighth consecutive league title.

“Juventus haven’t sapped our motivation, we knew it would be hard to keep up with them,” said Insigne.“The championship is still long. We left some points on the road that we deserved, but we certainly do not give up.”

Meanwhile, third-placed Inter Milan, nine points behind Napoli, are in turmoil as they host Sampdoria days after stripping star forward Mauro Icardi of the captain’s armband.“It was a difficult and painful decision because we know his worth,” said Inter coach Luciano Spalletti.