I also have Dorgu who I had presumed to be a regular this season but the EFL game and the zero minutes at the game against Burnley is looking more like Amorim is leaning towards Dalot as the left wing back while it looks like Amad will be stuck on that right wing back. But I see that the recent injuries could actually affect Amorim decisions soon.
4.5m on someone whose game time isn't guaranteed is no brainer; it's better to get a cheap option from Crystal Palace or Bournemouth with guaranteed playing time and DEFCON.
Cunha and Mount seems to out so maybe Amorim might want to twerk the formation by moving Amad upfront and Dalot taking the right wing back position. But I doubt he would do that, what we could see is Mainoo filling in for mount and Zirkzee filling in for Cunha.
Sesko in for Cunha, Mainoo in for Mount should solve the problem without complications but we all know Amorim likes the tough ways.