The young Colombian joined in the summer from Watford and was handed the No10 shirt for this season.
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But after the draw with Rayo Vallecano, Michel said: "He is a great footballer and he will surely deserve it, but giving the 10 to a player who has worked hard and on whom there are many expectations is a mistake.
"The talks we have had and the training I think have helped him.
"He is a good kid and he will go further, he has brutal talent and can play on the outside and on the inside."