Football player values are so fleeting and meaningless I struggle to care that much about them.
The trend always seems to benefit overpaying. Kyle Walker for £50m was shockingly huge at the time, and now I would consider it one of our best investments ever. Cucurella for £60m is way overboard now, but I expect in 5 years time Chelsea fans will feel it was well worth the £10m "overpsend". Does anyone think Liverpool care about smashing records for Van Dijk or Alisson?
Grealish is going to be here a long, long time. There's going to be plenty of chances for him to show his worth.