Spurs defeated City in the first-leg of their Champions League quarterfinal this week.
Brighton ran City close in their FA Cup semi-final defeat last weekend while Liverpool crushed City 5-1 in the Champions League semi-final last season.
Sissoko said: “The gaffer showed us some videos of different teams against them.
“We knew how they can struggle sometimes and that is what we have done. We played well and that is why they did not create so many chances.
“They were videos of different teams. Liverpool, Brighton in the FA Cup final on Sunday in their last game. They conceded some chances and that is what we were looking at. It worked for us."