Great video and I agree wholeheartedly that a big clear out is needed. The culture of fear and regression needs to be cut out, and only a big turnover of the squad will do this.
I'd move on: Onana, Bayindir, Lindelof, Evans, Maguire, Shaw, Malacia, Casemiro, Eriksen, Garnacho, Mount, Antony and Rashford - In an ideal world.
Leaving us with:
Keeper
Yoro - De Ligt - Martinez
RWB - Ugarte - Midfielder - Dorgu
Amad - Fernandes
Striker
Heaven, Dalot, Amass, Mainoo, Collyer, Zirkzee, Hojlund
Bring in 4 signings you'd expect to slot straight into the first 11. Promote youth and play it smart with free transfers and loans to bulk out the squad as is necessary after that.
With likely no European football to play next year this is the perfect year to properly tear up the squad and start from a fresh slate. This would go a massive way toward resetting the mentality and if we're smart, jump start us in the right direction.
I know people will accuse me of playing football manager, say it's impossible to move on that number of players etc, but it's clearly not if the will is there. Teams have done it in the past.
Of course it's almost certainly not going to happen to this extent, but I think the point made in the video linked is the right one - we can't tinker around the edges any longer, we're only going to slide in one direction.
What's really crazy is I could have added another couple of names to that list .. dire squad we've managed to assemble here for an absolute fortune. Madness.