Are you talking about Luca Meßner? 183 cm?
He needs a lot of handling training. Start with handling till the end of the season. He will need it if he is to create some scoring chances. You said OD but even if you train his OD to let's say 10-11, it won't be enough to stop opponent's good offensive player on his good day. And your guard will still have low handling and driving and won't produce anything on either end of the floor.