The German revealed the mood going into 2014 is in stark contrast to the pessimism following the opening day defeat by Aston Villa.
He said: "When we lost that first game, everyone was in a bad mood but we have turned things around completely and are delighted.
"We've had a great first half of the season and the aim now is to stay where we are. But we are contenders. That is all. We have not won anything yet."
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