I'm always hesitant to recommend "full rebuild" because its easy to say, but the reality is, it could mean genuine relegation battles if we perform the "open heart surgery" Rangnick recommended.
Our squad is not as bad as people believe, but we're never going to be able to dominate possession and dominate games with the profile of player we have now.
In the past, we've kidded ourselves that players can step up. "If only they could stay fit", "if only they played in position xyz", "if only they had x player beside them"...the reality is, top quality players are quality players in any team in any system.
The likes of Bruno, Martinez, Rashford, Dalot etc...are not the right profile to build on. They should all be sold if we're really serious about reshaping the squad in Amorim's image.
The base criteria for any footballer we bring in moving forward should be "are they a world class athletes?". If the answer is 'no', then by default, we strike them from the list.