Maurizio Sarri fired a parting shot at Eden Hazard and praised Cristiano Ronaldo during his unveiling as the new Juventus manager.
He faced the media and addressed supporters for the first time on Thursday morning in a press conference.
The 60-year-old made a fascinating dig at former Chelsea winger Eden Hazard, who has since joined Real Madrid.
'In recent years, I've had 4-3-3, but the 4-3-3 at Chelsea was very different to the one at Napoli. We had to accompany Eden Hazard's characteristics, as he could change the game, but also his presence caused issues in defending that we had to work on,' he admitted.
And he went on to add that none of the Chelsea players are of the quality of Cristiano Ronaldo, who will represent a step up in class.
'At Chelsea I coached some very strong players, but training Cristiano will be yet another step forward,' he added.
'He had made many records. I'd like to help him break some new records.'
Sarri, who later strolled around Allianz Stadium, initially fielded questions from a packed out press conference and admitted to having his head turned as soon as the Italian giants came calling, with one factor being the chance to live closer to his elderly parents.
'The feeling when Juve called me? Strong', he said. 'I've never seen a club so determined to get a coach before.
'The Premier League was a great experience, but in the latter half (of the season), I felt professional and personal needs to return to Italy.'