The Dutch forward linked to a mocked-up picture of referee Howard Webb in a Manchester United shirt after Liverpool lost 1-0 at Old Trafford in the FA Cup.

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Just before the break, Birmingham looked to have won a penalty when Bent was felled by Richard Stearman, but referee Howard Webb ruled out a spot kick.

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But all that changed when English referee Howard Webb awarded a controversial free-kick two minutes into stoppage-time.

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Liverpool were furious when United were handed the opportunity to draw level swiftly as referee Howard Webb awarded a penalty as the outstanding Antonio Valencia was hauled back by Javier Mascherano as the pair raced into the area.

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Scott Sinclair had a half-hearted shout for a penalty waved away by referee Howard Webb as the Eagles started to gain a foothold in the game.

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And shortly after, the Argentine, who was not having one of his better days, was shown a straight red by referee Howard Webb for elbowing the Swedish striker.

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The second came 18 minutes into the second half when Kightly whipped in a cross from the right and Wilson's arm made contact with the ball but neither referee Howard Webb or his assistant saw the misdemeanour and awarded Wolves a corner.

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Iniesta drilled his right-foot strike across goal - but the Dutch were incensed after referee Howard Webb had failed to award their side a corner moments earlier when a free-kick took a sizeable deflection off Cesc Fabregas.

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The home supporters then thought they should have had a penalty when Stoke defender Ryan Shawcross tangled with Julien Faubert in the box, but referee Howard Webb decided the English defender had timed his tackle well.

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