City meet Real this week after Saturday's nervy FA Cup win at Leyton Orient.
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Lewis said at the final whistle: "A great game, the name itself tells you the story!
"The boys have played it so many times and it has become a game you see every year: quarter-finals, semi-finals and this year so early.
"It is an important game and a new beginning for us who want to continue and today's victory will help us in this."