The starting point to me is to sell those players, and replace them.
We now live in a world where cash from player sales is more valuable than a cash injection from an owner.
Branthwaite is the best example in terms of how you can exponentially improve the talent in your squad.
If you sell him for 75m, and buy 5 young players for 15 million, you've leveraged his fee to not just improve the squad but perhaps the value of the squad as well.
It's tough as we form attachments to these players, and simple logic would dictate that you want to add to what you already have.
But financially and PSR wise, it's likely better to sell him.
Our problem has been that we would sell him and buy a bunch of expensive medicore, mid-aged players, or the money goes into a black hole and is never re-invested in the squad.