Are you trying to make a point about Lukaku's quality/ability or about Granovskaia's quality/ability in her role? Because you don't seem to be arguing one thing or the other.
Granovskaia is tasked with negotiating the transfers for incoming and outgoing players.
She doesn't decide who to buy or sell, she just makes it happen.
So tasked with signing a new centre forward (if rumour is to be believed) we inquired about signing Haaland and the deal would have been a £200m transfer fee, agent and signing on fees in the region of £50m and wages in excess of £400k a week. Harry Kane was a no go because Spurs.
So we signed Lukaku. His career record is 263 goals in 524 appearances and he is arguably at his peak right now. Tell me another striker in Europe who we could have signed with that sort of record who wouldn't have cost similar, if not more, than we paid for Lukaku?
Can you also tell me of another club that has paid £100m for a player and gone on to have a net positive spend in the same transfer window?