Pep Guardiola has warned his Manchester City players of the threat posed by Diego Costa and Pedro when they host Chelsea at the Etihad on Saturday. He said of Costa: "He's a top player. He made an amazing season at Atletico and then came here. He's a top player. "He is a top scorer and has good movement when he runs in behind." Of Pedro, he added: "I hope Pedro doesn't perform well. "I have to thank him, he made me a better manager. He works great between the lines, near the box he's a killer. He is one of the quickest players when it's time to shoot."
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