Spurs are set to play one of the lowest-ranked teams that are still left in the competition.
While they will be heavy favorites, Postecoglou knows anything can happen in a cup game.
He told reporters: “It's an exciting bit of the cup. I was watching it with my boys, and they asked me a million questions about Tamworth, and I had to do some quick Googling.
“Actually no, to be fair, I'd watched the previous round. I like watching the FA Cup games.
“So I saw how they'd got through, so I knew a little bit about them. It's a beautiful part of the FA Cup. I'm sure they're buzzing to have a Premier League team there.
“It's great for us because it's a tie that will obviously have a little bit of interest around it and yeah one I look forward to.”
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