Napoli defender Kalidou Koulibaly enjoys playing for coach Rafa Benitez.
Koulibaly arrived in the summer from Genk.
"When I arrived in Italy, nobody knew me and they were doubting my skills," Koulibaly said.
"Then I rolled up my sleeves and I'm happy now, I'm improving game after game.
"I didn't expect the call from Napoli, I couldn't believe in it when Benitez called me. Rafa is a great Coach, it was an amazing thing.
"He told me that he was interested in me and wanted me on his team, then I joined Napoli and I have to say that he helped me a lot, he knows what I need."
