Newcastle boss Eddie Howe expects Leeds to be revitalised under Sam Allardyce.
Newcastle meet Leeds in the early kickoff today.
Howe said, "I think we saw enough to say that that's going to be what Sam's going to give the team - a clear organisation, a clear structure, a definite philosophy in and out of possession - so for us watching it back tactically you could see the impact he's had on the team in a very short period of time.
"They're going to be tough to play against, they're going to ask questions of our back four, and we need to find the answers to those. Set plays are going to be a big threat - they're going to be very potent in that area of the game - so again we're going to have to be good, as we have been for the majority of the season in that respect.
"It'll be, I think, a totally different test to the one it could have been a couple of weeks earlier."