Liverpool legend on Manchester derby: Referee 'forgotten that Fergie's retired!'

Jamie Carragher was not impressed with the refereeing of Michael Oliver this afternoon.

Today saw Manchester City and Manchester United slug it out in the Manchester Derby - with City taking the victory courtesy of a solitary Sergio Aguero strike.

But it was a game unfortunately hindered by a woeful refereeing performance by Michael Oliver. The red card for Manchester United defender Chris Smalling was fair, he deserved to walk.

But throughout the game he failed to give Manchester City several stonewall penalties.

First he denied Aguero after Fellaini booted him in the ankle, then Yaya Toure was felled by Marcos Rojo before Aguero was again the victim - this time Michael Carrick mistiming his tackle.

But Oliver was having none of it, prompting an amusing quip from a Liverpool legend.

Jamie Carragher had plenty of run-ins with Manchester United during his Liverpool playing career, all of which came against a Sir Alex Ferguson led Red Devils.

And Carragher made this joke on Twitter, suggesting Oliver had forgotten Fergie had retired.

Throughout his career as boss Sir Alex seemingly had a hold on some referees, with many suggesting decisions always seemed to go the way of Manchester United, especially at Old Trafford.

It even led to jokes this summer of a 'blow' to United after Howard Webb hung up his whistle and laid down his cards.

Here is the Tweet in question...

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