West Ham captain Declan Rice praised Joao Felix after yesterday's 1-1 draw with Chelsea.
Felix struck for the visitors before Emerson Palmieri's equaliser.
Rice later said: "I've played against many midfielders and number 10's and in the first 10 or 15 minutes of the game you could tell he's a top player.
"The way he worked from one side to the other to have the ball and finding space shows what an unbelievable player he is. I understood that right away.
"You really have to play a good game to deal with players like him."