I didn't really believe that he can achieve anything before this season, but he is doing really well so far...
he has scored some nice goals:
and some other Polish talents from Legia:
Also there are others, 19-21yo, like Furman - he will be a great central midfielder, also Karol Linetty from Lech Poznań is supposed to be talented. 18yo Arkadiusz Milik was already called up for the national team...it looks that Polish football should improve in nearest 3-4 years:)
Wolski would be perfect for Borussia, but we will see. There are rumours that many teams like Liverpool, Tottenham, Milan etc. are interested in them, but such teams are interested in ~100 young players ;)
Hard to say. He is very confident for his age, scores both with powerful shots and headers, is very well built, in a way he is similar with Lewandowski, although he is more of a finisher than passer. What will come out of him is a mystery though.