Juventus captain Gianluigi Buffon believes Gonzalo Higuain will have an "enormous impact" following his €90 million move from Napoli.
Higuain, 28, joined Juve last month after his release clause was activated in a deal which made him the most expensive transfer ever in Italian football.
The Argentina international moves to Turin having just broken a 66-year-old Serie A record for most goals in a single campaign after scoring 36 last season.
"At first I didn't expect Higuain to sign, but when everyone started talking about it, it all became more likely," Buffon told Sky Italia. "He was certainly the No. 1 danger man every time we played against Napoli.
"He's a world-class striker who we admired beforehand and who we hold in even higher regard right now."
Higuain has been criticised for leaving Napoli for the Serie A champions, but Buffon believes that shows a strength of character.
"I believe that a player who has the courage to come here shows great personality because it would have been easier for him to make a different choice," Buffon added. "Someone like Gonzalo, who scored loads of goals in three years at Napoli, has the right to decide his own destiny and this right of his was also confirmed by the fact that he had a buyout clause in his contract.
"Besides Higuain, we've also signed several other players, who if they demonstrate what they've done in their careers and show that desire to surprise and help us by working their socks off, I believe that we can improve significantly this season.
"He could have an enormous impact on the group, for his footballing history, the shirts he has worn, the goals he has scored, his physical presence and his character."