Former Juventus striker Fabrizio Ravanelli says Inter Milan stand apart due to their work in the transfer market.
Ravanelli was impressed by Inter's 3-0 win at Napoli.
He told TV Play: The victory against Napoli weighs a lot. Inter on Sunday showed off all its qualities, those necessary to dominate at national and international level.
"They impressed me with his defensive solidity, concreteness and cynicalness; they don't forgive you at the first opportunity, they suffered in some moments of the match because Napoli pushed so hard, and they proved to everyone that they are a difficult team to beat.
"They then found a magical goalkeeper in Sommer. A bit of luck, then, always helps; just think that last season the Nerazzurri sold Onana, considered one of the best in Europe, for 50 million and today he is unpresentable and then signed a fantastic goalkeeper.
"Inter doesn't make a mistake with a purchase, they know how to choose and are deservedly at the top of the table."