Sarri: Juventus are the best team in Italy, Cristiano Ronaldo is the world's best player Serie A He was officially presented on Thursday

Juventus officially presented Maurizio Sarri as their new coach on Thursday and the former Chelsea tactician has indicated that the Old lady are the best Serie A club.

The 60-year-old has also hailed Cristiano Ronaldo's quality and he pledged to assist the Portuguese's efforts to break more records.

"I always arrive with some scepticism, as it already happened at Empoli, Napoli and Chelsea," he said.

"The only way to eliminate this scepticism is by winning and convincing people.

"Juventus are the most important team in Italy and their offer is the culmination of a very long career, 80 percent of which was very difficult.

"With Cristiano Ronaldo we are at a higher level, as he is the best in the world.

"It is exciting to be able to coach him and I would like to help him overcome new challenges.

"When a player has the quality of [Paulo] Dybala or Ronaldo, they can play any role on the pitch and what can change is just the interpretation of that role.

"The philosophy of the game remains the same, but you have to have the intelligence to adapt it to the characteristics of the players."

Sarri went on to express his feelings over his former team Napoli and to discuss his return to San Paolo as an opponent.

"When I was a kid, I was a fanatical Napoli fan and I gave them my all, from a professional and moral point of view," he added.

"Then I preferred to go abroad to not immediately move to another Italian team.

"When I go to San Paolo, I know that if I am applauded it will be a manifestation of love and if they whistle at me it will also be a manifestation of love.

"I will go out and love them as before, one way or another.

"Everyone thinks that I have a bad relationship with [Napoli president Aurelio] De Laurentiis, but I will always appreciate that a Neapolitan, a fan since childhood, managed to coach his team.

"This doesn't happen often and he gave me that gift."

Finally, he acknowledged that the team's ultimate target is to win the Champions League trophy.

"I think they will judge me for what we will do in the Champions League and I am looking forward to getting up in the morning, starting working and studying how to win the matches," he noted.

"It will not be easy, as Juventus have the burden of being favourites in Italy and in the Champions League it is evident that they have the obligation to start with the objective of winning it."