The Real Madrid No.7 appeared to be on the receiving end of contact from the Barcelona defender three minutes in - but was it enough contact to justify giving a penalty?
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The officials at the Santiago Bernabeu decided against it - and thousands of football fans made their varied opinions crystal clear on Twitter in the moments afterwards.
Victory in the Spanish capital would revive Barca’s Liga hopes, while defeat would see them six points adrift of their Clasico rivals and triumph surely no longer within their grasp.