obviously he wasn´t as good as this season but he still was one of the main reasons gladbach could avoid relegation. also one of the few players who didn´t play horrible until favre took over. afair he also scored the important away goal in the relegation play offs.
furthermore i can´t remember him being injured at all but i´m not quite sure about that.
btw: like 2 pages before someone (nickolas?) said that he and goetze are way too expensive. i agree with goetze but according to german media reus can leave at the end of the season for 18mio.
//edit: i looked up his stats:
he played 32/34 games, started all of them and always played at least until the dying minutes.
10 goals, 9 assists (in a team that finished 16th...).
picked up 9 yellow cards so he was sidelined for 1 game for that reason. so it seems like he was injured for 1 game or the coach just didn´t want to play him there (which seems unlikely).
i would love to have him at juventus. it´s a shame that he won´t play a key role at the german national team in the forseeable future