I can't think of a formation that can't accommodate Bruno and Sancho, our 2 best front 6 players by an absolutely massive distance, except a defensive 4-4-2, and Ten Han won't play that.
It's not about formation. We are getting Ten Hag because he has a specific way of playing that's about specific movements in zones of the pitch and isn't formation dependent. It requires footballing brains and hard work in training and off the pitch. This is exactly what RR hasn't been able to get out of this group. We have to get rid of the players who can't play his way. It will take time but no one should assume that any player is safe.
His hardest challenge will be getting rid of the players who are currently in the first 11 who the board or fans like and have spent a lot of money on in fees and wages, who can't or don't want to play his way. De Gea, Maguire, Ronaldo, AWB, Pogba this summer are the obvious ones and later Varane, McTominay, then probably Shaw and Rashford who will all leak things to the press and bitch and moan about Ten Hag, if he stops playing them. The club will have to expect this and be patient with Ten Hag. Bruno is less likely to be gotten rid of as he has a great football brain and should adapt if he wants to but he's lazy, likes to be free to roam and doesn't like a rigid team structure or to sacrifice himself for the team at moments when its necessary in matches which Ten Hag won't like.
Donny will also have a huge advantage in the short term in Bruno's position as he knows exactly what Ten Hag wants and how to do it. With Ten Hag it's teamwork and team tactics over the individual. Bruno will have to work hard to overcome this. The board and the fans should accept we are going to see something different and there will have to be massive changes if Ten Hag is to be successful. If this doesn't happen Ten Hag will be another failure, sacked in 3 years and player power and the commercial club will succeed. We will continue to be a joke of a club, living in the past. There's no point in getting Ten Hag if your not going to do it his way. We should have gone the easy route with Poch, kept all the players, extended their contracts, let them play how and when they want and accept the fourth place trophy every year.