Sunderland striker Steven Fletcher admits the club is a different place since Paolo di Canio's departure.
Fletcher insists the difference since new boss Gus Poyet took over has been like â€śnight and dayâ€™â€™.
Fletcher, 26, told the Daily Star Sunday: â€śMartin Oâ€™Neill was a massive Âinfluence. When I knew ÂSunderland Âwanted me, it was a massive club and I Âwanted to come here.
â€śBut part of it was playing under Martin. I was Âdisappointed when I got Âinjured, then a week or so later he got the sack.
â€śIt was hard. I was away in ÂDubai. Heâ€™d given me two weeks off and I was on the beach and got a text saying heâ€™d been sacked.
â€śThe rest of that season I was Âinjured so I didnâ€™t really see the new manager, except in the corridor. In pre-season, I wasnâ€™t involved as I was still coming back from the injury and then, when I did come back, it was a surprise.
â€śI was shocked to see how intense it was â€“ not the training, it was hard training but anyone can do hard training â€“ it was just the atmosphere, the intensity of it all. It was just a weird atmosphere.
â€śYou had a little laugh and you had the feeling your head teacher was Âgoing to tell you off.
â€śHe said he didnâ€™t want us to smile and laugh in training â€“ he said that himself, he canâ€™t deny that.
â€śBut every other club Iâ€™ve been at, itâ€™s been a big part of things, having that togetherness. To be scared to say anything in case he had a crack at you, itâ€™s not nice, is it?
â€śWe werenâ€™t scared to talk to each other but it got to the point where you just didnâ€™t want to.
â€śThe boys were just coming in, Âdoing their job and leaving. They just wanted to leave because it wasnâ€™t a nice place to be."
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