I watched him many times for Schalke and Denmark u21 and i closely watched him against Serbia last year, and i know him well. After the first half against Mutd i came for the first time to see his set and he's much better than this stats are saying.
First of all, his tw is his biggest quality. Tactically already classy player, fantastic without the ball, always an option for a build up play early, moving around to find a good position to recieve the ball. 71 can't be serious, he's already for 84 or even 85.
Att and def can also go up, especially att. 72 would be more realistic, def would be perfect on 69.
Long passing can reach the yellows, he's not a pin point passer most of the time, bit his diagonal long balls are really good, he's so good in that, something about 82 would be really good.
Response also shouldn't be on whites, in defensive sense he's quite responsive, he always wants to be close to the ball, and can be really aggressive. Can go up to 77.
Mentality also is too low, should be in range of high whites, low greens for the start.
Edit: i doubt he deserves a BTB card. He's probably a playmaking candidate.
These are some suggestions for the start, because he's so underrared so i wanted to at least highlight his main qualities.