Clarke signed a contract extension with Premier League club Tottenham Hotspur until 2023 on July 2, 2019. Clarke returned to Leeds on loan for the remainder of the 2019-20 season as part of the agreement that sent him to Tottenham on the same day. He made his debut against West Ham United in a 3-1 win at White Hart Lane. In doing so, he became only the fourth player in Leeds United history to score on their first appearance for the club. The other three are Peter Lorimer, Gary McAllister and Tyler Walker. Clarke has also represented England at every level from under-16 through to international football. He scored twice in the UEFA European Under-17 Championship final in 2003 when England lost 4-2 to Portugal. He went on to play 63 times for his country between under-17 and under-21 levels before moving to Tottenham. There he won two FA Cups and one League Cup during five seasons with the club. After leaving Tottenham, Clarke had short spells with Barnsley and Huddersfield Town before joining Leeds United in January 2018. He has since gone on to make over 100 appearances for his new club and helped them secure their highest ever position in the English league system - sixth place - ahead of this season.