The 27-year-old joined Spurs from Newcastle United on a five-year-deal and is expected to give the Lilywhites pace, strength and running power in the middle of the park.
The player came to prominence after he sparkled for France at Euro 2016, although his form for Newcastle at times demonstrated his potential.
Nonetheless, Spurs were believed to have wanted Sissoko to give their attack more pace and penetration. In the club's two 1-1 draws with Everton and Liverpool this season, the side from London seemed to struggle to get behind both teams.
Just prior to the French international's signing, Pochettino admitted that he was searching for a solution to this lack of penetration.
He told reporters: "We need a player who is more direct, more aggressive offensively. Because we have players like Christian Eriksen, Heung-Min Son or Erik Lamela who like the ball played into their feet.
"So we need someone who has characteristics like we saw from Liverpool, like Sadio Mané, the type of player that can break the defensive line."
After Sissoko's arrival at the London-based side, the player explained why he shared similar objectives with his new coach.
He told the club's official website: "We will work well together as we have the same objectives. I like to run forward, I like power and I have a lot of energy which I can bring to the team."