You talk like 10m is nothing. That 10m saved will go towards other fees like his wages or other transfers. Let the experts deal with it. If it takes till the window closes, so be it
Doubt it will go till the end of the window though. For us, Koulibaly could be the final transfer of the window so for our part it wouldn’t matter, but Napoli have several targets they need to conclude after selling Koulibaly, so they don’t have time to wait much longer.
As the dick ADL is, just watch as he/Napoli announces Koulibaly is extending his stay without talking to us first, because he got fed-up of us not upping our offer.