Mata is chelsea's best player this season no doubt. Mata on form is class and would fit almost any team. He has weaknesses like any other player could have, which is holding unto the ball under pressure. If he was as strong as even silva, he would be a far better player than he already is. He also gets tired easily, if he gets a one week rest, he will produce the form he produced earlier this season. RDM usually rested mata from time to time.