Hasenhuttl says the on-loan Chelsea striker is part of the 'Boy Group'.
Hasenhuttl said: “It was never as easy for him as it has been here because he had his best mate Tino from the first moment with him.
“Here we have a few young lads that are always training with us and who are always hanging together. We call them 'The Boy Group'.
“It's fantastic for him to be with them now. I think this is the reason why he loves it so much here.
“When you get a feeling as a player that what you've got told to do helps you develop your game, then you do it and like to do it.
“The rewards are goals and good performances.
“We tried to offer what we have promised and this is an honest way of handling this that helps you to come here and find your role in this club quicker."
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