The Sweden international, who joined from Djurgården in 2024, had grown frustrated with limited game time following Roberto De Zerbi's arrival towards the end of last season, and made his desire for a move clear over the summer.
Nottingham Forest had a £38 million bid rejected for the 20-year-old, according to the BBC, while Newcastle United, Aston Villa and Chelsea were all credited with interest as speculation over his future intensified.
Spurs held firm, and a series of conversations with De Zerbi during pre-season is understood to have persuaded Bergvall to commit his future instead, with the midfielder handed fresh terms and a significant pay rise. He had already signed a contract extension to 2031 back in April 2025.
Bergvall has made 80 appearances in all competitions for Tottenham and won 14 senior caps for Sweden, including appearances at this year's World Cup, despite being just 20 years old. This season, however, he has featured for only 45 minutes in the Premier League, starting the opening-day defeat by Brentford before dropping to the bench for the games against Newcastle and Forest.
"I think we're building something great here. It's an exciting time for the club and that's why I'm happy to extend my contract," Bergvall said.
"I'm always trying to achieve as much as possible, to be the best version of myself both on and off the pitch and I know this is the right place to do that.
"Personally, my goal is to produce more for the team - performances, goals and assists - to help as much as I can. I'm getting better every day in training and I'm looking forward to what will be a really good season ahead."
De Zerbi, who described Bergvall as "a top, top, top player" back in July while insisting he would not stand in the way of any player wanting to leave, has since acknowledged he made mistakes in how he handled the midfielder during a chaotic run-in to last season, when Spurs narrowly avoided relegation.
"Every day in training you can see Lucas' desire to learn, improve and push himself to the highest level," De Zerbi added. "Lucas is brave, he wants responsibility and has the personality to play in big moments.
"I believe his best football is still ahead of him and we want to give Lucas the platform to reach his full potential."