Chelsea boss Graham Potter praised Enzo Fernandez after victory at Leicester City.
The Blues won 3-1 at the King Power stadium on Saturday.
Potter said, "He's a fantastic player, a young player. I think he's going to get better and better when he's with us more. He's just arrived to a new country and a new league so you always have to adapt to that.
"You can see his quality, when he gets the ball he passes forward. He sees everything."
Potter also spoke of Mykhaylo Mudryk's cameo.
"He'll get better and better. He's a young player that hasn't that much experience, so each game he'll get better and better. His attitude is fantastic, he wants to help the team and work with the team. I'm delighted he got an assist and helped us."