AC Milan have signed Real Madrid great Luka Modric, Fiorentina have taken Edin Dzeko and Napoli have added Kevin de Bruyne.
But Di Canio told La Gazzetta dello Sport: "I don't want to be a destroyer, but I have two analyses. The first: I will enjoy their play, but I'm sorry that no one has looked for them in Europe. Not even the third, fourth or fifth forces. We took them from the first.
"We will see the Croatian's creativity or the Belgian's passes, with rhythms, timing and spaces that are easier for them. But Italian football, from Ronaldo to Ribery, brings people to the twilight.
"I want to use a term in a friendly, non-derogatory way: the cemetery of noble elephants. As children, they say they watched our football, but they're still there at 40. They come to wonderful places, but to a tournament that in their memories is the 2006 World Cup, with Cannavaro, a defender, and the Ballon d'Or winner."