The Inter Milan striker, who scored 16 goals in Serie A last season, had been tipped for a massive £60m move to England.
"Throughout the season Chelsea have been there with a multi-million pound offer but appear to have become more determined," he told Jornal do Brazil.
"I'm happy to know that but am happy in Milan where I'm treated like a king.
"I hope to complete one more year there at least and I don't think about leaving," he added.