Juventus' managing director Jean-Claude Blanc believes that new signing Diego will be crucial for the Turin club next season.
The 24-year-old Brazilian has finally tied up his switch from Werder Bremen, with Blanc delighted that the deal has finally been completed.
He told his club's official website: "In terms of his technical abilities, Diego is a crucial player for the reinforcement of the squad.
"We have always said that our objective is to blend youngsters and champions and Diego is the synthesis of these identities.
"He may only be 24 years old, but he has great experience after more than seven years of being a top professional.
"I'm sure that his contribution will be important in helping Juventus grow and take further steps forward."