I think this would be the quickest and most efficient way of conducting an overhaul of the squad.
Removing clear deadwood or underperforming players and replacing them with potential or clear talent.
This would result in quick wins to improve the squad.
Mine are
Attack OUT - Sanchez and Mata
Attack IN - Sancho and Joao Felix
Midfield OUT - Matic and Herrera
Midfield IN - Rodri and Neves
Defence OUT - Smalling and Darmian
Defence IN - De Ligt and Wan Bissaka
Whilst there are many more...
If you could sell and sign 2 players in Defence, Midfield and Attack who would it be?