The salient point is that all the managers you are pointing at are hired by clubs who have slim hopes of landing managers - for the time when they will underperform - that we United fans are rightly considering as second choice. Hell I'd argue...
Well said. As for the reason, I say it was Fred's red card in Europe (don't know the match), the one that made ETH look like a dodgy manager, that might have been a catalyst.
The fact that ETH beat Real may have had bearing on us eliminating Barca last season. Managers have both bogey teams and relative whipping boys. SAF did very well against Juventus when they were good, and did poorly against German and Spanish...