I seriously doubt that Guardiola will want to go through the 2025/26 season fretting & sweating about the fitness & waning physical attributes of his squad, & the lack of quality replacements we have.
My gut feeling is more will be moved on & there'll be more incoming. The quicker we get this transition completed, the quicker we can begin the process of settling the squad down & them becoming a cohesive unit again.
I think those under immediate threat are Philips, Nunes, Gundog, & Grealish, with question marks over Ederson (Saudi interest), Kovacic (Saudi interest), Stones (age & injuries), Aké (age & injuries) & KDB (age & injuries).
Personally, I'd keep those with question marks against their names as a transition squad. Keep them fit & manage their game time to preserve them, as we incrementally introduce their eventual successors.