Problem with the younger players is their wages. Joffy had to take a wage drop to go to Hull, to avoid Leeds having to pay his wages. Greenwood and Harrison similar. Although, Harrison is probably seen as having PL experience, giving us an option on the wing and a homegrown player for no money.
The only sellable players are Pascal, Gnonto, Tanaka, and Mesiler.
The rest are either paid too well, or we won't get back what we still have to pay for them. As we've seen, the PSR accounting practice is to take cost and spread it over years of the contract, meaning we still have money on the books for Piroe (10m) and Aaronson (12m).