The Ivory Coast midfielder has lost his first-team place to January signing Wilson Palacios.
Zokora admits he is not prepared to sit on the bench under Harry Redknapp at White Hart Lane.
"If I can't play regularly then I shall be looking to leave," he told Ivorian paper Super Sport.
"All my career I have been first choice and Harry likes me, but he also has good players but I need to play.
"The World Cup is in June 2010 and I can't sit on the bench if I want to be in the Ivorian squad.
"I am working hard to impress and get back in the team and I would like the season to finish on a high - but it is hard for me after being dropped."