Now that we are selling Cleverley this signing does make sense. I hope he is upgrade on him(he is yet to prove himself),it's just few million more than we are getting for Cleverley so I am pleased with this signing, especially because he is more defensive oriented so we can pair him with our other midfielders and not like Cleverley(even though I like him, and I thought he could be a squad player here) who could theoretically be paired just with Carrick, Jones&Fletcher(last two were far from great options, so actually only good pairing with Cleverley was that one with Carrick).
I am not expecting too much from him, but he seems like a tidy player who could improve us defensively when Carrick isn't available, and he is still very young, plus van Gaal knows him very well, so let's see what he can do.