LONDON, March 17 -- A weekend split between the quarterfinals of the FA Cup and the Premier league once again produced more than its fair share of drama in England.

Manchester City qualified for the last four of the FA Cup in controversial style and after an early wake-up call as they fought back from 2-0 down against Championship side Swansea, with an 88th minute goal from Kun Aguero booking their ticket to the semis.

Aguero's goal should have been ruled out for offside and Manchester City coach, Pep Guardiola admitted as much in his post-game press conference.

"I don't like to win games when the decisions are wrong but the referees don't want to make the wrong decisions, they must be helped. It's centimeters," he said, before adding his side "played incredibly well."

There were different emotions on the other side of Manchester as Manchester United went out of the tournament after losing 2-1 away to Wolves, who took the win thanks to goals from Raul Jimenez and Jota.

It was the second away defeat Ole Gunnar Solskjaer's side have suffered in less than a week and the Norwegian admitted it was their worst performance since he had been in charge.

"We lacked urgency and quality on the ball... but don't take anything away from Wolves," he added.

Solskjaer is right to praise the victors, who knocked Liverpool out of the tournament in the third round.

Watford are also in the hat-for the semifinal draw after Etienne Capoue and Andre Gray steered them to a 2-1 win at home to Crystal Palace. Watford have now beaten the South-London team three times in three games this season.

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