De Paul is a big money target for Leeds United.
“De Paul is in love with Udine and Udinese, so unless the chance of a lifetime comes along and the club receives the right offer for his true value, I would not be surprised to see him stay," Marino told Il Gazzettino newspaper.
“I see him highly-motivated in training, a real leader as well as a fantastic player. He's very intelligent and sets the example for everyone in the squad.
“We see the transfer value discussed in the newspapers, so it's preferable that everyone just relaxed. We'll see that what ought to happen will happen."