If we think about it for a second, I don't know how much more his price will go up. If we want as much money as possible, this summer seems like the peak. Older he gets the more he actually has to produce to live up to that 70-80m price tag. His price tag today is mostly about hype, potential and his age.
We're not rich like the top teams in Europe and I'm pretty sure Agnelli has those thoughts for this upcoming summer.