Cavani penned a new 12 month deal with Manchester United earlier this week. The veteran arrived last summer on a free transfer from Paris Saint Germain and despite some injury problems, has enjoyed an outstanding first season in England.
For Mazzarri, the impact of Cavani has been no surprise. The former Napoli coach worked with the centre-forward in Naples and is adamant even at 34 that Cavani would improve any team in Europe - including Real Madrid.
Mazzarri told France Football via Le 10 Sport: “I am really proud of his career. He's a player who gave me a lot and, in my opinion, he can still give today, as he demonstrated against Roma in the Europa League! He has the characteristics to continue to evolve in big clubs. In Real Madrid for example.
"There are great players there, but not with his profile. He could only do good: would plead young people to grow up, and on the field, an association with Karim Benzema would be very interesting. There would be no problem: Cavani still works for the team, he likes it. I know him very well, I had him for three years."
Mazzarri says given Cavani's experience, that any club - including United - would benefit from the example the striker sets.
He concluded: "Beyond technical and physical skills, his main quality is his leadership."
So far this season, Cavani has managed 36 appearances for United, scoring five goals and producing five assists. In his time with Napoli, Cavani scored 104 goals in 138 games.
- updated May 13