Over half of the 7 players are leaving at the end of the season on a free/sale or actively looking, or the club is looking, for a loan move for them now. The other two (Casemiro, Mount) are impractical to try and move because of their contract situation. Maybe in Case's case there's a chance Saudi can cough up enough to help him move. So it seems obvious there's a will at the club for the majority of these players to go.
Getting permanent moves for Antony and Rashford is also hard for the same reason as Case/Mount. In Mount's case it's purely injury for me, if he can get and stay fit he's a good fit for the system and the manager clearly rates him as a player.
It's all well and good saying these players need to go before Garnacho, but it's easier said than done. I get people don't like that, but that's just the price of making bad transfer decisions. The reason there's a split in this thread over Garnacho being sold is down to opinions of him as a player and how people view his potential.