You know, it's probably just my opinion, but I trust Moyes, and our scouts, to do what's best for the club. We don't have the slightest idea what we paid, but I'll bet it isn't as much as folk think.
There is no reason to think that Fellaini will be replaced, but there is a possibility that he has been sold already, and allowed to stay at the club until the summer, which might explain a bit of spending money, but I try to think positively, so I'll hope it's an extra player, and another great signing.