And the summer arrival from Eintracht Frankfurt also has assured fans he will never be complacent.
"I know what people expect. I have my expectations too,” he said. "I'm just working on it to be as good as people expect me to be and I know I'm in a place I was dreaming to be.
"I've been to so many places and you always have something to reach. I think that's what football is.
“I always think that football makes you tired physically but mentally, if you want to get to the top and do and achieve things, it's always about again and again and again.
"Because if tomorrow I score a brace and I say, 'I'm really good', it stops. Obviously I want to be the best - that's why I'm playing.
“But I know I have so much work, so many things to improve. But, of course, I want to be the best.
“A striker needs goals to be alive. Sometimes I don’t get an assist, I don’t get a goal but I know I make a good run for someone and he’s gonna score.
“And if I don’t do that, nothing is going to happen. If you don't have pressure, if people don't care, that means you're not at the right place. I'm at the right place.”