Sunderland striker Steven Fletcher is happy playing for new manager Gus Poyet.
The Scotland international says Poyet has the squad " buzzing" again.
On Poyet, Fletcher said: "He's been brilliant, first class. He's given the boys a buzz again.
"From what I've seen in a week, it's like night and day, the difference between those two. He's more like Martin in the way he's training.''
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