I think his signings have been good. Bailly has looked like the best defender we've had in years, it's hardly Jose's fault he's got an injury. That's the United CB curse. Pogba is quality, though we're not getting the best out of him at the moment, and he's had an injury too. Vidic and Evra should tell you that half a season is too soon to write off Lindelof, a young defender from another league. Mkhiti is the only one that definitely looks like not working out, which is not a bad failure ratio for signings.