Chelsea midfielder Mateo Kovacic admits he's been surprised by the quality of Eden Hazard.

Kovacic arrived last month on-loan from Real Madrid.

When asked just how good his new team-mate is, Kovacic said: "Really good. I didn't know he's so good."

"Obviously I knew that he is a great player," the Croatian added. "But now, when I see him playing with us every day, every week, he is just incredible.

"For me, in this moment, one of the three best players in the world.

"I am enjoying with him, with other players, because the team is really amazing, talented, and I think we can do great things this season."