By all accounts, it's been said multiple times by people like Andy Mitten, that the club will look completely different in 12 months time, and by that they mean players, staff, structure.
INEOS have been pretty ruthless so far with the big earners who either don't play or aren't performing up to a standard that matches their wages. Varane, Martial, likely Casemiro and Sancho also, are the first out the door, probably quickly followed by those who aren't good enough like VDB. Make no mistake about it, that's a cost cutting strategy, not a 'clear the deadwood and support the manager' strategy. Players like Rashford (who people want sold due to perceived attitude issues) will still be here next season and the manager will pick him every game he's fit, regardless of who the manager is.
When he's not banging on about immigration, Ratcliffe has spoken multiple times about the need for patience at United. They don't foresee a quick rebuild scenario, in fact it seems they are under the impression this whole structure they're putting together will take more than 12 months to bear fruit. So whomever the manager is can't have the attitude of playing however they want and finishing 8th because they're too stubborn to adapt to the players they currently have and focus on winning games today.
Then you've got Ten Hag who seems to be lying his way through a job interview and hoping the owners don't fact check him. We don't create the most chances, we're not the most dynamic team in the league, we're not better than we were last season etc, all things that he's said in the last month.
CL football is a must next season and we need a manager that will come in and get the best out of the players we have and then build upon it with the help of the incoming strucutural changes over the course of the coming seasons. If that means playing counter attacking football for a year or two then that's what we have to do. You can't just throw all your players under the bus because you don't have a fit left footed CB and De Jong in the midfield. Ten Hag isn't the man to lead this rebuild, we know that much. I'm sure that the new management are busy in talks with many managers who potentially fit the bill.