Cook acknowledged a great and spirited performance from his side. He also spoke about the upcoming quarter final against Southampton – saying both teams were probably surprised at the outcome.
Cook said: "When the draw was made, no one texted each other, it was like we weren't in it. Now we play Southampton at home. I'm sure Southampton are as shocked as we are because they were probably thinking how disappointed they are going to the Etihad.
"It's a fantastic game for everyone. You're a game away from Wembley. What an occasion it will be. We have to concentrate on the league now, the FA Cup becomes a massive distraction, but we're in it."