Napoli forward Lorenzo Insigne believes Cristiano Ronaldo won't have it easy in Serie A after moving to Juventus in a £99.3 million move.
The 33-year old has ended his nine-year association with Real Madrid, where he won four Champions Leagues, four Ballon d'Ors and scored 450 goals to name just a few of his remarkable feats.
He now embarks on a new challenge in Turin, a city where the Scudetto has remained since 2011/12 following Juventus's incredible domestic dominance.
And though Italian international Insigne welcomes CR7 to the league, he doesn't think it will be all plain-sailing for the Portugal captain. Insigne also added that he's a bigger Lionel Messi fan than he is Ronaldo.
"CR7? Welcome to him, but I'm curious to see how he'll adapt to our league. He won't be able to win games by himself.
"Personally I prefer Messi for what he represents for football, but the talent of the Portuguese is not in question. If he's won five Ballons d'Or it means something.
"Italian defences are very strong though, even if he proved against Juventus that he's a phenomenon. In a longer tournament we'll see...
"Maybe Ronaldo will save himself to aim for the Champions League, which is his big objective. Then in the Champions League last 16 two years ago he didn't score against us. We hope to repeat that."
Under Maurizio Sarri, Napoli proved to be serious challengers to Max Allegri's side last term and after beating them at the Allianz Stadium in April courtesy of a last minute Kalidou Koulibaly header, were just a point behind the Bianconeri .
But although it was a lot closer for Juventus this time around, they reigned supreme again and finished four points clear at the top.
Sarri has moved to Chelsea, with Carlo Ancelotti returning to the Italian top flight and replacing him in Naples. Insigne believes that with the experienced manager at the helm, they will be Juventus' toughest title challengers once again.
"Are we still Juve's main challengers? Yes, because as the president says Ancelotti is our best signing. Don't forget that this is a very strong group that has already done well.
"The club and the coach will know where and how to reinforce this team, the only regret is that in doing so people forget the good things done over the past few years."