Durante, an expert on the South American transfer market, cannot believe Inter paid so much for Alvarez while they have Philippe Coutinho on their books.
He told TMW: "When a few people in Italy were asking about Alvarez and branding him as the new Kaka, I said he was a good player worth maybe €2 million and should go to a club like Udinese.
"Alvarez is slow, but also has quality. He is certainly not a player for Inter, I think it was wiser to take him to a club such as Parma or better yet, Udinese, who for years have been able to maximize the potential of players and camouflage flaws, as happened with Armero. Guidolin's leadership and Udinese have made him a phenomenon, although he is not. And this is the secret of a great club.
"But Inter, however, has done an extraordinary thing by paying €3.8 million for Coutinho. That was something positive with Coutinho, but with Alvarez they made an error in paying so much money.
"In the market there are errors. Alvarez is not worth the money, the error was to think that at Inter he could find space. He needs to play often, which he did not even with Velez."