Nobody wants to buy Rashford, Casemiro, or Antony, we can't sell players like Hojlund or Zirkzee, as it would be a loss on the books, Eriksen and Lindelof will be off for free in the summer, Shaw and Mount are injured, De Ligt, Maz, and Ugate have just joined, Bruno and Amad won't be sold, which basically leaves Martinez and Dalot, who I suppose could be sold, but both start virtually every game, and will probably raise less than half that Garnacho would at best.
The only other outfield player I can think of is Mainoo, but for me I'd rather see Garnacho go before he does.
It's not a nice thing to have to do, but the Glazers walked us to the edge of a cliff, and this is the upshot.