"I don't think many people are going to put any money on us," Warnock told Sky Sports News. "But the FA Cup is such isn't it? It's such a great competition.
"It would be a major upset if we went there and won, but we're looking forward to it. I don't think many people, when the team sheets came out, gave us much chance against Tottenham or Everton, but it's a little bit more difficult with it being at the Etihad as well.
"But we're going to enjoy it. There are no league points at stake and I'm sure the fans will enjoy going over there."
Leeds currently sit 11th in the Championship table, eight points adrift of the playoff places.