Brighton have now developed a reputation as being capable of developing players and turning this into prized assets.
They have seen the likes of Moises Caicedo and Alexis Mac Allister depart for huge fees last summer after they arrived for minuscule fees.
With those two sold, everyone with an opinion has set about identifying their next big profit sale.
While the obvious choice is Evan Ferguson, he is probably a player who will remain for a few seasons yet.
Therefore, former Brighton defender Adam Virgo has looked elsewhere for his prediction.
Gilmour to be the next big money sale
Gilmour has been selected as the potential next one up for Brighton by Virgo who spoke with the Daily Record.
“Billy got his opportunity at Chelsea and his early performances were really, really good.
“At Norwich, he struggled massively but was still learning the game and then it didn’t start well at Brighton. But we’ve got to remember Billy is only 22. I feel he’s come back in this season with the mentality that Caceido would go and has grasped the opportunity.
“I’d be looking around and thinking: Caceido’s gone for that money, Alexis Mac Allister for £55m and, before them, Marc Cucurella for £60m and Ben White for £50m. Billy has plenty learning space in front of him to become a better player and be sold on for a big profit when he’s 25 or 26.”
Virgo then continued to praise the set-up at Brighton and the impact of Roberto De Zerbi.
“He’s seen players around him of that age increase in value and go on to bigger clubs. There’s not one Brighton player who hasn’t improved under Roberto De Zerbi. That’s a hard thing to do.
“Look at Solly March playing now, Kaoru Mitoma has got better and even Lewis Dunk at his age. In Billy’s case, he’s seized the responsibility and become a much better footballer.”