Sampdoria coach Sinisa Mihajlovic was delighted with Luis Muriel's goalscoring performance in victory at Atalanta.
Muriel and Stefano Okaka struck in the 2-1win.
Mihajlovic said: "Muriel has everything it takes to become a champion. Since he arrived here he's played twice and scored two goals.
"He needs to train well and have the faith of his Coach. He needs to be constantly motivated, but should also be grateful to the club that did so much to get him here.
"He reminds me of Ronaldo, the Brazilian one, in many of his movements. He's still not 100 per cent fit, but is a great talent."