These guys just won the Champions League. They are on top of the world and you have had unlimited resources. That translates to "if you wanted them to stay, they would have". You just didn´t fight hard enough.
I don't think Rudi or Christensen would've stayed for £500K a week. They wanted to go to Real Madrid and Barca (and I can't really blame them) on free transfers. We probably could have chucked more money at Mount to stay but although I love him, let's be honest, us selling him for £60 million is not looking like a massive error.
Mendy was not great. Pulisic, Werner and Havertz were so inconsistent for ages, selling all of them was the right move and I would not want any of them back.