50m transfer fee, 5-year contract, 6m net salary: ~20.5m per season
60m transfer fee, 5-year contract, 6m net salary: ~22.5m per season
20m commission, 3-year contract, 10m net salary: ~24m per season
20m commission, 5-year contract, 10m net salary: ~21.5m per season
that 10m automatically makes this deal more or less just as expensive as it would "normally" be
if he accepts a lower salary around 6m + bonuses this is a completely different deal then.