I think that from the beginning they were talking about how important Fabinho is for them, that's the one thing. I suppose that Chelsea might have enquired about Bakayoko before we did for Fabinho or they knew about interest for both and decided they'd rather let Bakayoko go. Notice that they haven't sold Sidibe or Lemar either, it's like selling one from a position (fullback, midfielder, winger vel attacking player, shit knows what they do with Mbappe though). Plus there was rumoured interest in Fabinho from PSG, they could've fleeced them for like 60-70 mil Euros but they didn't, here you just don't know if they didn't want to sell to a direct rival.