He's been doing greatly this season. He mostly plays as a WF, but he's behaving as a sort of a allrounder down his flank. As I commented before, he doesn't have a blistering pace as in the past, but his determination and commitment to tactics are both priceless. Somewhat similar to Schöpf, but much more mature and stable.
His move from Wolfsburg to Schalke was eventually the best for him. Even prior to his injuries, he was already stuck and disencouraged within a loose squad in Wolfsburg.