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However, the referee opted for a yellow card instead of a red.

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Crouch expressed his frustration while on TNT Sports, saying: "I was screaming for a red card straightaway.

I think Díaz is going in here, I think he takes a touch across him.

"I think that should be a red card.

But he's so good, Díaz, at taking it across defenders."

Crouch reiterated his thoughts post-match, saying: "I think it could have been [a red card].

I think Díaz has got the presence of mind to go across the defender.

"How does the referee know where he's going to have his touch?

Because I think he takes this touch on the half-volley across the defender and then he's in on goal.

He is I believe going through one-on-one with the goalkeeper so yes I think it should have been red."

After being knocked out of Europe, Liverpool must now regroup as it continues its Premier League title chase this weekend at Craven Cottage against Fulham.