goon I think you could rotate those 2, certainly Rice, against weaker sides at home but the issue now is we have no more easy games. They need to keep playing.
Kiwior for Zinchenko is an upgrade. Partey for Jorginho should work in theory but Partey looks miles off match sharpness. I guess he needs to play to get it back though, catch 22. Trossard for Martinelli is fine, he's shown that. Tomi for White, its ok but I prefer Tomi for left back, I think White can keep going.
Resting Saka or Ode comes with a huge drop in quality no matter how you set up the team. Not sure we can do that again this season. So if they aren't injured they need to keep playing.