Postecoglou told Inside Spurs: "It will be a tough game. Newcastle at home the atmosphere will be electric, they get behind their team and it's a great game to be involved in, a good test going up there, our form recently has been decent and it's an important game in the context of our season, so it's a good challenge and an exciting one.
Newcastle are very aggressive, particularly with their pressing, and when they play at home, irrespective of how they set up, the energy they get from the crowd means it's usually a really up tempo game. If you watch all their games, irrespective of the opposition, they are high tempo, fairly open and it will probably be similar tomorrow.
We have to make sure we bring our energy to it. We want to play high tempo, so that should suit us, but we have to match the energy they will bring, particularly early in the game."