[....]then they should hire just the players Pochettino needs any other player Pochettino doesn't need should not be hired doesn't matter how expensive and famous they are.
It's not like quality players are lining up on Chelsea's doorstep hoping for a contract. The market is competitive enough that every top clubs fight over them. Face the fact that Pochettino will not get all his preferred players and that Chelsea will be forced to sign an alternative.
Reshuffling players again and again for every season also it won't go well in the current conditions for them. because regardless of anything other than just setting money on fire, adjustments are constantly being made in the end it's not going to lead to anything good.
Even though Poche certainly wants the conditions to be in accordance with what he aspires to be, of course many of the players there can actually be used, it's just that it really needs a few more adjustments.