Out of the names I've seen or are somewhat realistic (so no Pep, Klopp, Arteta, Ancelotti or Zidane), I'd rank them like this...
Tier 1
Tier 2
- Nagelsmann
- Tuchel
- Flick
- Spalletti
- Luis Enrique
Tier 3
- Michel
- Ruben Amorim
- Inzaghi
Tier 4
I don't think Xabi Alonso is realistic, so I'd say De Zerbi is my top choice. Tier 2 all have some sort of baggage, where you know they are really good coaches but tend to not get along with whatever structure they're in or eventually have a fallout, or have a bit of a ceiling to what they do that maybe isn't high enough. Don't think any of these would reach 4 years but would do ok in the meantime. I'd be fine with any of these groups though, even Potter and Mckenna, for one reason or another. They can all work if we have a good structure in place and more importantly, if they adapt to the club and league. 2 years ago I'd have said that ten hag is in that top tier of available managers and Pochettino probably around 3rd tier where I didn't really want him but would have some upside.
Tier avoid
- Southgate
- Mourinho
- Conte
- Emery
- Simeone
- Allegri
- Pochettino
This tier are managers who just don't play the football that United should play, and so I'm convinced that one way or another it wouldn't work out.
The others like hassenhuttl or Lopetegui that I've seen in this thread shouldn't even be brought up (Mourinho shouldn't either).