Juventus manager Massimiliano Allegri is wary of the hype surrounding the club since Cristiano Ronaldo moved to the club.
Five-time Ballon d’Or winner Ronaldo, 33, completed a €100 million transfer from Real Madrid to Juventus earlier this month with many excited by his arrival.
The Portuguese star won four Champions League titles at the LaLiga club and joins the Turin giants hoping to win a European title in a third major league, following previous success at Manchester United and with Real Madrid.
But Allegri refused to be carried away by the signing of Ronaldo and warned it may be even harder for Juventus to defend their league title.
“There is too much euphoria around us and it’s not good. This year will be more difficult than others.
“Opponents will be more aggressive because we have won many games and now we have an excellent player like him.
Ronaldo will not feature in the International Champions Cup for Juventus, but it is thought he will be available for their Serie A opener against Chievo.
Cristiano Ronaldo joined Juventus, becoming one of the four most expensive players of all time.
A deal worth 112m euros (£99.2m) was reached between the two clubs that has seen the Portuguese sign a four-year deal with the Italian champions.
Ronaldo, 33, won four Champions League titles in his nine years at Real.
“The time has come to open a new stage in my life, that’s why I asked the club to accept transferring me,” he said at the time of his unveiling.
The top two world record transfer fees have been paid out by Paris St-Germain – the £200m they paid Barcelona for Brazil forward Neymar last August, and the fee of around £166m for France forward Kylian Mbappe in July after a successful season on loan with PSG.
Barcelona also paid Liverpool £142m for Brazil midfielder Philippe Coutinho in January. For Juventus, the fee they will pay for Ronaldo is set to eclipse the £75.3m they paid for forward Gonzalo Higuain from Napoli in July 2016.