Norwich keeper Bunn doesn't fear flying Chelsea
But Bunn, 28, insisted: "I'm really looking forward to it because these are the sort of games where you can really make a name for yourself. As a goalkeeper, you know you are going to be busy so you have the chance to put in a big performance.
"John's injury was unfortunate for him, but it was fortunate for me because it gave me a chance and I'm determined to take it. I'm really enjoying myself at the moment and I want to make sure I stay in the team - even when John's fit again."