For Villa, the victory has turned a promising start to the season into a very good one.
El Ahmadi said: "It was unbelievable, I cannot believe we won.
"A team that beat Man Utd last week - they are one of the best teams in the world. We will take that.
"After it went 1-1 we played very well.
"We have started well this season and we believe we can play against big teams. Now we have shown we can."
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