Leeds may have sold a future England captain for short-change.
Grealish is a local lad made good, whose impressive performances have attracted interest from Premier League clubs.
As they demand a big fee for his services, Leeds United will reflect on a blown opportunity.
Leeds United sold their local star Lewis Cook for a relative pittance, getting a fee of £6 million from Bournemouth which could rise to £10 million.
Unlike Grealish who already has a chequered off-field history, Cook is the model professional without a single tabloid scandal to his name.
Cook captained England's under-20s to the World Cup last summer, to the recent Toulon tournament win, and he has already made his full international debut, this March against Italy.
Leeds letting him go as cheaply as they did looked a poor move at the time, mishandled by former owner Massimo Cellin after botching a planned contract extension.
Seeing Villa get close to £30 million for Grealish, a player who may even be inferior to Cook, would make Leeds' business look even more disastrous.