Watched him today quite closely and I think he's a candidate for D-Line Control only two or three years. Yes, he is quite communicative with his team-mates, but with 22 years it is too early for me for this card. Additionally I rather he is at the moment more a marking defender sticking to the striker (today mostly Podolski, who hadn't any chance to shoot). That is one of his best assets I think to forecheck the opposition very early so the player only have possibility to pass back.
I also think his positioning is better than his reaction or at least at the same level. In duels he sometimes comes to late and causes so some stupid fouls. Otherwise in the defence line he stands very well, if it's needed he's rushing out of out to interrupt an attack of the opponent.
Finally, he just needs some tweaks in passing, Ment/TW. His short passing is pretty safe, in the build-up he almost makes the right decisions and brings the ball successfully further. As I said he is a very communicative defender, Wollscheid needs a raise in Team Work as well. He is talking to everybody in his line to either move forward or to stand correctly. And last but not least, he got a decent technique when receiving a ball for his size.