The Bantams take a 3-1 aggregate lead to Villa Park, having already secured wins over Premier League sides Arsenal and Wigan on their incredible run thus far.
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"My heart says extra time and we'll win on penalties," he told reporters.
"I just know that we're not going to do it the easy way. They'll put me through the wringer and I'm ready for it.
"It's been incredible. You've got to look at where we've come from, where we are in the league. The effort has been amazing.
"It's been beyond our wildest dreams. A very close friend of mine who sat next to me in the first leg said the return at Villa Park is our Wembley final.
"That's the way I'll be approaching it. My head says anything else is a bonus."