I really don't understand why people are getting so upset about this. We're all United fans, we all want to have a great season next year so honestly, let's just get on with it.
For me INEOS have handled this absolutely correctly, and if everyone wasn't refreshing twitter every 30 seconds there'd be almost no controversy to speak of. ETH undeniably, undoubtedly had a bad season. A negative goal difference is simply unforgiveable, and cannot happen again. I care a bit less about '8th!' because but for a couple very dodgy penalties in the CFC match we'd 6th and no one should care about the difference between 6th and 8th - neither is good enough.
And hence, the management conducted a review of the options for the future. Which had to include actually speaking to those options. And having done that, and factored in the previous season, injuries, the squad condition etc they've decided to give ETH a season to make his plan work.
It's fine if you disagree with that decision, but there's absolutely nothing wrong with the way it was done. It was sensible, didn't take too long and is done miles before preseason.
The most important thing now is to fix this broken squad to give ETH the best chance of success. Because Tuchel, Poch or Potter would be just as bad with the XIs typically available to ETH last season.