Don't have time to look through all the many pages of replies on this thread since I last viewed it, but I just did a search for Lokomotiv and I'm not sure this has been answered. Basically, the charitable way of putting it is that his work there is yet to bear fruit. They were second in the league last year before he came and are currently fourth, but look a much worse side despite his expensive (by Loko's standards) squad revamp. They're also already out of the Europa League before the last matchday, having been poor throughout and been twatted at home to Lazio last night.
An English language Twitter feed devoted to Russian football described it thus:
Maybe it will prove a decent move for the rags and no doubt it's better than having Carrick in charge for a few months. However, Rangnick has been a head coach (as opposed to a sporting director) for only two seasons in the last ten. In his entire coaching career, he's won one Intertoto Cup and one German Cup. To get him to agree to the interim role, the rags have supposedly had to agree to a subsequent two-year consultancy arrangement with contractual guarantees that his recommendations will be acted on.
And even if his association with that motley bunch works out for both parties, their desperation in agreeing to his terms shows what a fucked-up club they are at the moment. After promoting the likes of Murtough and Fletcher, they made a big deal of having landed on a new, modern football structure to take them into the future, something they've lacked post-Ferguson. That they're now ripping it up to attract an interim manager tells us all we need to know.
I haven't seen anyone in the media take that line, though. All I've seen is a lot of sycophantic bollocks about how well they've done to get a "proper football man" on board.