Archie Gray to Tottenham is a done deal, talkSPORT understands.
Spurs are understood to have activated his release clause, of £40million, and he underwent a medical on Monday ahead of his switch from Leeds
Joe Rodon is also set to join Leeds as part of the deal, meaning Spurs will pay £25m-£30m.
It's believed that Brentford had initially offered over his release clause to get a deal done quickly and he was even set to undergo a medical.
But it was shot down over issues with the payment structure.
Leeds academy product Gray had been offered a contract worth £75,000-a-week, an attractive package for the 18-year-old.
The deal was set to smash Brentford's current transfer record, which stands at £30m when they agreed a deal with Belgian side Club Brugge for Brazilian forward Igor Thiago in February.
The Bees will now be forced to the drawing board to get the deal done.
Gray was also on the radar of Chelsea, Liverpool, Aston Villa and West Ham.
But now he will become a Tottenham player.
The England youth international only made his senior debut on the opening day of the 2023/24 season.
He went on to make 52 appearances for the Whites in all competitions - chipping in with a goal and two assists.
Starting the campaign as a central midfielder, Gray went on to make the majority of his appearances at right-back, showcasing his versatility.
Leeds had hoped to secure Premier League football for themselves, but missed out on automatic promotion to Leicester and Ipswich.
Despite making it to the play-off final, Daniel Farke's side were beaten by Southampton, subjecting them to at least one more year in the second-tier.
It is believed that Gray's departure would see them comply with Profit and Sustainability rules, which would put them in a strong position should Crysencio Summerville be subject to any offers.
Club chairman Paraag Marathe failed to rule out Gray from departing Elland Road last month.
He said: "It’s a little too early to answer specific questions. I can’t talk on specific players right now.
“If I can paint the big picture, there are certain things we need to do and we’ll make sure we’re fully compliant with PSR.
"There are certain trade-offs we have to make. We have to get to the drawing board to work out which moves we have to make.
“Obviously, Archie’s a tremendous player, but every season brings change. I can’t yet comment but we’ll see what happens.”
As for Brentford, they will be looking to improve on last term's 16th place finish in the Premier League.