The forward has been linked with a January move to the Nerazzurri, where good friend Lautaro Martinez is on the books.
De Paul said, “He's happy, he's good at Inter, he feels at the centre of the Nerazzurri world. He's found a coach who gave him total confidence, and it shows.
“The release clause [in Martinez's contract] does not make sense when a player is getting the full support of the club where he is. I remember him when he was at Racing in the youth academy and he was about to take off, you could see it."
De Paul also admitted his admiration for Inter coach Antonio Conte.
He told Corriere dello Sport: “Udinese gave me the Italian dream and I have a responsibility with a shirt that means a lot. Having said that, you are talking about a coach, Conte, who is for me in the top three in the world along with Guardiola and Sarri, but don't ask me in what order.
“I am convinced, it will be point for point in the Scudetto race this season. There will be no great distance between them like in the last few years."