The 19-year-old player has agreed to a new, long-term contract with Tottenham, which will replace his previous deal that was set to expire in 2027.
Abbott made a strong impression during his loan spell at Notts County last season, and his performance earned him a spot on the shortlist for the League Two Young Player of the Season award.
He made his first-team debut for Tottenham in their Premier League win over Leeds United in May 2023.