Yeah for sure that is true but that also depends on the contracts themselves and how they're structured. For example, if Badiashile (who looks amazing so far btw) ends up being not that good/useful to Chelsea and he's still got 6 years left on his deal, I doubt selling him back to the French league will be a huge problem. I could see it being an issue with the top end prospects like Mudryk who will be on 97K a week and likely heavily incentivised, meaning he could be on 120K in a year or two, but if he flops, shifting him could be an issue as he likely wouldn't get a contract like that anywhere else.