The French midfielder was brought to White Hart Lane on deadline day of the summer transfer window, signed from Newcastle for a reported £30m fee.
He has most certainly not lived up to that price tag in north London, failing to establish himself in Mauricio Pochettino's first-team with a series of dreary displays throughout the campaign.
Reports suggest Spurs could cut Sissoko loose this summer, after a year in which he has cemented himself as one of the most useless signings of the season.
So, just who else is a conteder to be named the most useless signing of the season?