Chelsea have described as "utter nonsense" a claim from a Stoke steward that Diego Costa stamped on his foot.
Stoke have confirmed that a member of their security staff reported Costa to the match referee after an incident on the touchline during the Potters' victory over the Londoners at the Britannia Stadium on Saturday.
TV footage of the alleged incident shows Chelsea striker Costa going to retrieve the ball for a throw-in and then appearing to make contact with the steward with his foot.
A Chelsea spokesperson simply said: "Utter nonsense."
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