depends on what the clause actually said.
It might well have said that if we got CL during his 18 month loan period then it became an obligation - and that is more logical as after 6 months we did get CL,
It would be perverse to have a clause that said if we get CL after 6 months ignore it if we don't get CL after 18 months.
If the clause had been triggered why would we then end up paying less than the predetermined price..... That would be insanely stupid on Juve's part.
Coulda sworn Kulu was quoted early this summer saying "I need to get my future sorted" too.