The manager told Sky Sports News: "The last time I was there as a coach was the Youth Cup final and we were successful. If there are any coincidences or traces of luck then hopefully that will happen.
"It is exactly the same, everyone outside of Norfolk doesn't give us a chance on Sunday. Chelsea are going for the title and we are in the bottom three and it doesn't take a genius to work out who the neutral will be fancying to win the game.
"It was exactly the same with the Youth Cup final, nobody really gave us a chance against a big and expensively-assembled Chelsea side but it is very similar to now, if you get the players right and get them believing they can go there and cause an upset they can."
Norwich currently sit 18th in the Premier League table.