Former Italy star Christian Vieri is happy seeing Charles de Ketelaere proving himself with Atalanta.

De Ketelaere struck twice in victory over Lazio on Sunday.

Vieri told Gazzetta.it: "I see football differently. When foreign players arrive in Italy, especially at San Siro or in a team like Juventus, where there is pressure, it takes time. You have to stay calm.

"Last year he arrived at Milan, everyone expected a lot, but it's not easy. So how is his year at Atalanta going? He's playing a lot more, because then you have to give the strong young player time.

"If you make him play every now and then and then not, he struggles to find a rhythm. He's going very well at Atalanta."