Well his release clause is 60 odd million for a start and that's deemed a 'bargin' apparently. Palace csn slap whatever valuation they want on him given he's young and ticks the homegrown criteria especially given Chelsea have thrown 100 million on other young players, hell your starting point is the fee they paid for mudryk.At what point does that become moot? Lets say his release clause is £50m. Arsenal come in and offer that. Chelsea come in and say we will pay £60m and pay him higher wages. He doesn't have to go to Arsenal if he wants to go to Chelsea. The club aren't going to be able to extract way more from Chelsea.