The 21-year-old, who made his debut for Germany this week, scored only once for the Reds last season, but believes he can offer more this term.
"I want to do more in attack and I know I can improve in that area of my game. I want to do much more going forward in terms of scoring goals and providing assists," he told the official site.
"I'm trying to bring that into my game and I'm working on it in training.
"I always try to do my best and put in the running and help out in defence. I'm determined to work hard in defence and in attack.
"Playing in midfield means you have to take more responsibility. That means I want to score more goals and help the team to get results."
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